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href="/wiki/System_on_a_chip" title="System on a chip">system on a chip</a>) and ends at the visibility of the <a href="/wiki/Home_screen" title="Home screen">home screen</a>, or special modes like <a href="/wiki/Android_recovery_mode" title="Android recovery mode">recovery</a> and <a href="/wiki/Fastboot" title="Fastboot">fastboot</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> The boot process of devices that run Android is influenced by the firmware design of the SoC manufacturers. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Background">Background</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=1" title="Edit section: Background"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As of 2018, 90% of the SoCs of the Android market are supplied by either <a href="/wiki/Qualcomm" title="Qualcomm">Qualcomm</a>, <a href="/wiki/Samsung_Electronics" title="Samsung Electronics">Samsung</a> or <a href="/wiki/MediaTek" title="MediaTek">MediaTek</a>.<sup id="cite_ref-:2_2-0" class="reference"><a href="#cite_note-:2-2"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Other vendors include <a href="/wiki/Rockchip" title="Rockchip">Rockchip</a>, <a href="/wiki/Marvell_Technology,_Inc." class="mw-redirect" title="Marvell Technology, Inc.">Marvell</a>, <a href="/wiki/Nvidia" title="Nvidia">Nvidia</a> and previously <a href="/wiki/Texas_Instruments" title="Texas Instruments">Texas Instruments</a>. </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=2" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Verified boot, a <a href="/wiki/Booting#Measures" title="Booting">booting security measure</a>, was introduced with <a href="/wiki/Android_KitKat" title="Android KitKat">Android KitKat</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Stages">Stages</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=3" title="Edit section: Stages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Primary_Bootloader">Primary Bootloader</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=4" title="Edit section: Primary Bootloader"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Primary Bootloader (PBL), which is stored in the <a href="/wiki/Boot_ROM" title="Boot ROM">Boot ROM</a><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> is the first stage of the boot process. This code is written by the chipset manufacturer.<sup id="cite_ref-:3_5-0" class="reference"><a href="#cite_note-:3-5"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>The PBL verifies the authenticity of the next stage. </p><p>On Samsung smartphones, the Samsung Secure Boot Key (SSBK) is used by the boot ROM to verify the next stages.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>On SoCs from Qualcomm, it is possible to enter the <a href="/wiki/Qualcomm_Emergency_Download_Mode" class="mw-redirect" title="Qualcomm Emergency Download Mode">Qualcomm Emergency Download Mode</a> from the primary bootloader. </p><p>If the verification of the secondary bootloader fails, it will enter EDL.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template noprint noexcerpt Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:NOTRS" class="mw-redirect" title="Wikipedia:NOTRS"><span title="This claim needs references to better sources. (September 2021)">better source needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading3"><h3 id="Secondary_Bootloader">Secondary Bootloader</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=5" title="Edit section: Secondary Bootloader"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Because the space in the boot ROM is limited, a secondary bootloader on the <a href="/wiki/EMMC" class="mw-redirect" title="EMMC">eMMC</a> or <a href="/wiki/EUFS" class="mw-redirect" title="EUFS">eUFS</a> is used.<sup id="cite_ref-:1_8-0" class="reference"><a href="#cite_note-:1-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> The secondary bootloader initializes <a href="/wiki/TrustZone" class="mw-redirect" title="TrustZone">TrustZone</a>.<sup id="cite_ref-:1_8-1" class="reference"><a href="#cite_note-:1-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_9-0" class="reference"><a href="#cite_note-:0-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>On the Qualcomm MSM8960 for example, the Secondary Bootloader 1 loads the Secondary Bootloader 2. The Secondary Bootloader 2 loads TrustZone and the Secondary Bootloader 3.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>The SBL is now called XBL by Qualcomm and which is an <a href="/wiki/UEFI" title="UEFI">UEFI</a> implementation. </p><p>Qualcomm uses LK (Little Kernel) or XBL (eXtensible Bootloader), MediaTek uses <a href="/wiki/Das_U-Boot" title="Das U-Boot">Das U-Boot</a>.<sup id="cite_ref-:2_2-1" class="reference"><a href="#cite_note-:2-2"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Little Kernel is a <a href="/wiki/Microkernel" title="Microkernel">microkernel</a> for <a href="/wiki/Embedded_system" title="Embedded system">embedded devices</a>, which has been modified by Qualcomm to use it as a bootloader.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Aboot">Aboot</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=6" title="Edit section: Aboot"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Android Bootloader (Aboot), which implements the <a href="/wiki/Fastboot" title="Fastboot">fastboot</a> interface (which is absent in Samsung devices). Aboot verifies the authenticity of the boot and recovery partitions.<sup id="cite_ref-:3_5-1" class="reference"><a href="#cite_note-:3-5"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> By pressing a specific key combination, devices can also boot in <a href="/wiki/Android_recovery_mode" title="Android recovery mode">recovery mode</a>. Aboot then transfers control to the Linux kernel. </p> <div class="mw-heading mw-heading3"><h3 id="Kernel_and_initramfs">Kernel and initramfs</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=7" title="Edit section: Kernel and initramfs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Booting_process_of_Linux" title="Booting process of Linux">Booting process of Linux</a></div> <p>The initramfs is a <a href="/wiki/Gzip" title="Gzip">gzipped</a> <a href="/wiki/Cpio" title="Cpio">cpio</a> archive that contains a small root file system. It contains init, which is executed. The Android kernel is a modified version of the Linux kernel. Init does mount the partitions. dm-verity verifies the integrity of the partitions that are specified in the fstab file. dm-verity is a Linux kernel module that was introduced by Google in Android since version 4.4. The stock implementation only supports block based verification, but Samsung has added support for files.<sup id="cite_ref-:0_9-1" class="reference"><a href="#cite_note-:0-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Zygote">Zygote</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=8" title="Edit section: Zygote"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Bionic_(software)#Components" title="Bionic (software)">Bionic (software) § Components</a></div> <p>Zygote is spawned by the init process, which is responsible for starting Android applications and service processes. It loads and initializes classes that are supposed to be used very often into the heap. For example, dex data structures of libraries. After Zygote has started, it listens for commands on a socket. When a new application is to be started, a command is sent to Zygote which executes a <a href="/wiki/Fork_(system_call)" title="Fork (system call)">fork()</a> system call.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (September 2021)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="Partition_layout">Partition layout</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=9" title="Edit section: Partition layout"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Android system is divided across different <a href="/wiki/Disk_partitioning" title="Disk partitioning">partitions</a>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>The Qualcomm platform makes use of the <a href="/wiki/GUID_partition_table" class="mw-redirect" title="GUID partition table">GUID partition table</a>. This specification is part of the <a href="/wiki/UEFI" title="UEFI">UEFI</a> specification, but does not depend on UEFI firmware.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=10" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Coreboot" title="Coreboot">coreboot</a></li> <li><a href="/wiki/Booting_process_of_Windows" title="Booting process of Windows">Booting process of Windows</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Explanatory_notes">Explanatory notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=11" title="Edit section: Explanatory notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">These modes tend to support a feature to resume regular booting</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=12" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-:2-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-:2_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:2_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFGarriKenazaAissani2018" class="citation book cs1">Garri, Khireddine; Kenaza, Tayeb; Aissani, Mohamed (October 2018). <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1109/saconet.2018.8585583">"A Novel approach for bootkit detection in Android Platform"</a>. <i>2018 International Conference on Smart Communications in Network Technologies (SaCoNeT)</i>. 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Singapore. p. 166. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-981-15-9942-2" title="Special:BookSources/978-981-15-9942-2"><bdi>978-981-15-9942-2</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/1236261208">1236261208</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Internet+of+things+security%3A+principles+and+practice&rft.place=Singapore&rft.pages=166&rft.date=2021&rft_id=info%3Aoclcnum%2F1236261208&rft.isbn=978-981-15-9942-2&rft.aulast=Tang&rft.aufirst=Qinghao&rft_id=https%3A%2F%2Fwww.worldcat.org%2Foclc%2F1236261208&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABooting+process+of+Android+devices" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite book</a>}}</code>: CS1 maint: location missing publisher (<a href="/wiki/Category:CS1_maint:_location_missing_publisher" title="Category:CS1 maint: location missing publisher">link</a>)</span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlendalDyrkolbotnAxelsson2018" class="citation journal cs1">Alendal, Gunnar; Dyrkolbotn, Geir Olav; Axelsson, Stefan (March 2018). <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/j.diin.2018.01.008">"Forensics acquisition — Analysis and circumvention of samsung secure boot enforced common criteria mode"</a>. <i>Digital Investigation</i>. <b>24</b>: S60–S67. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.diin.2018.01.008">10.1016/j.diin.2018.01.008</a>. <a href="/wiki/Hdl_(identifier)" class="mw-redirect" title="Hdl (identifier)">hdl</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://hdl.handle.net/11250%2F2723051">11250/2723051</a></span>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1742-2876">1742-2876</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Digital+Investigation&rft.atitle=Forensics+acquisition+%E2%80%94+Analysis+and+circumvention+of+samsung+secure+boot+enforced+common+criteria+mode&rft.volume=24&rft.pages=S60-S67&rft.date=2018-03&rft_id=info%3Ahdl%2F11250%2F2723051&rft.issn=1742-2876&rft_id=info%3Adoi%2F10.1016%2Fj.diin.2018.01.008&rft.aulast=Alendal&rft.aufirst=Gunnar&rft.au=Dyrkolbotn%2C+Geir+Olav&rft.au=Axelsson%2C+Stefan&rft_id=http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.diin.2018.01.008&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABooting+process+of+Android+devices" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZhaoXiWuAizezi2018" class="citation book cs1">Zhao, Longze; Xi, Bin; Wu, Shunxiang; Aizezi, Yasen; Ming, Daodong; Wang, Fulin; Yi, Chao (2018). <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1145/3207677.3278046">"Physical Mirror Extraction on Qualcomm-based Android Mobile Devices"</a>. <i>Proceedings of the 2nd International Conference on Computer Science and Application Engineering</i>. 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title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Physical+Mirror+Extraction+on+Qualcomm-based+Android+Mobile+Devices&rft.btitle=Proceedings+of+the+2nd+International+Conference+on+Computer+Science+and+Application+Engineering&rft.place=New+York%2C+New+York%2C+USA&rft.series=Csae+%2718&rft.pages=1-5&rft.pub=ACM+Press&rft.date=2018&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A53038902%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1145%2F3207677.3278046&rft.isbn=9781450365123&rft.aulast=Zhao&rft.aufirst=Longze&rft.au=Xi%2C+Bin&rft.au=Wu%2C+Shunxiang&rft.au=Aizezi%2C+Yasen&rft.au=Ming%2C+Daodong&rft.au=Wang%2C+Fulin&rft.au=Yi%2C+Chao&rft_id=http%3A%2F%2Fdx.doi.org%2F10.1145%2F3207677.3278046&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABooting+process+of+Android+devices" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Booting_process_of_Android_devices&action=edit&section=13" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://source.android.com/security/verifiedboot/boot-flow">Android.com - Boot Flow</a></li> <li><a rel="nofollow" class="external text" href="https://source.android.com/devices/automotive/power/boot_time">Managing Boot Time</a></li> <li><a rel="nofollow" class="external text" href="https://osg.wiki/books/all-about-deados/page/qualcomm-bootloaders">Qualcomm Bootloaders</a></li> <li><a rel="nofollow" class="external text" href="https://lineageos.org/engineering/Qualcomm-Firmware/">Qualcomm's Chain of Trust</a></li> <li><a rel="nofollow" class="external text" href="https://www.qualcomm.com/media/documents/files/secure-boot-and-image-authentication-technical-overview-v2-0.pdf">Secure Boot and Image Authentication</a></li> <li><a rel="nofollow" class="external text" href="https://www.timesys.com/security/secure-boot-snapdragon-410/">Secure boot on Snapdragon 410</a></li> <li><a rel="nofollow" class="external text" href="https://blog.quarkslab.com/analysis-of-qualcomm-secure-boot-chains.html">Analysis of Qualcomm Secure Boot Chains</a></li> <li><a rel="nofollow" class="external text" href="https://github.com/msm8916-mainline/qhypstub">msm8916-mainline/qhypstub</a></li> <li><a rel="nofollow" class="external text" href="https://dev.to/larsonzhong/android-system-init-process-startup-and-init-rc-full-analysis-22hi">Android system init process startup and init.rc full analysis</a></li> <li><a rel="nofollow" class="external text" href="https://android.googlesource.com/platform/system/core/+/master/init/README.md">Android Init Language</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist 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abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Android_(operating_system)" title="Template:Android (operating system)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Android_(operating_system)" title="Template talk:Android (operating system)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Android_(operating_system)" title="Special:EditPage/Template:Android (operating system)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Android" style="font-size:114%;margin:0 4em"><a href="/wiki/Android_(operating_system)" title="Android (operating system)">Android</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Android_Go" title="Android Go">Android Go</a> <ul><li><a href="/wiki/Comparison_of_Android_Go_products" title="Comparison of Android Go products">Comparison of products</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Android_software_development" title="Android software development">Software <br /> development</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Programming_tool" title="Programming tool">Development tools</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Official</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Android_Runtime" title="Android Runtime">Android Runtime</a> (ART)</li> <li><a href="/wiki/Android_SDK" title="Android SDK">Software development kit</a> (SDK) <ul><li><a href="/wiki/Android_Debug_Bridge" title="Android Debug Bridge">Android Debug Bridge</a> (ADB)</li> <li><a href="/wiki/Fastboot" title="Fastboot">Fastboot</a></li> <li><a href="/wiki/Android_App_Bundle" title="Android App Bundle">Android App Bundle</a></li> <li><a href="/wiki/Apk_(file_format)" title="Apk (file format)">Android application package</a> (APK)</li></ul></li> <li><a href="/wiki/Bionic_(software)" title="Bionic (software)">Bionic</a></li> <li><a href="/wiki/Dalvik_(software)" title="Dalvik (software)">Dalvik</a></li> <li><a href="/wiki/Firebase" title="Firebase">Firebase</a> <ul><li><a href="/wiki/Google_Cloud_Messaging" title="Google Cloud Messaging">Google Cloud Messaging</a> (GCM)</li> <li><a href="/wiki/Firebase_Cloud_Messaging" title="Firebase Cloud Messaging">Firebase Cloud Messaging</a> (FCM)</li></ul></li> <li><a href="/wiki/Google_Mobile_Services" title="Google Mobile Services">Google Mobile Services</a> (GMS)</li> <li><a href="/wiki/Android_NDK" title="Android NDK">Native development kit</a> (NDK)</li> <li><a href="/wiki/Android_Open_Accessory_Development_Kit" class="mw-redirect" title="Android Open Accessory Development Kit">Open accessory development kit</a> (OADK)</li> <li><a href="/wiki/RenderScript" title="RenderScript">RenderScript</a></li> <li><a href="/wiki/Skia_Graphics_Engine" title="Skia Graphics Engine">Skia</a></li> <li><a href="/wiki/AdMob" title="AdMob">AdMob</a></li> <li><a href="/wiki/Material_Design" title="Material Design">Material Design</a></li> <li><a href="/wiki/Font" title="Font">Fonts</a> <ul><li><a href="/wiki/Droid_(typeface)" title="Droid (typeface)">Droid</a></li> <li><a href="/wiki/Roboto" title="Roboto">Roboto</a></li> <li><a href="/wiki/Noto_fonts" title="Noto fonts">Noto</a></li></ul></li> <li><a href="/wiki/Google_Developers" title="Google Developers">Google Developers</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/OpenBinder" title="OpenBinder">OpenBinder</a></li> <li><a href="/wiki/Apache_Harmony" title="Apache Harmony">Apache Harmony</a></li> <li><a href="/wiki/OpenJDK" title="OpenJDK">OpenJDK</a></li> <li><a href="/wiki/Gradle" title="Gradle">Gradle</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Integrated_development_environment" title="Integrated development environment">Integrated<br />development<br />environments</a> (IDE)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Android_Studio" title="Android Studio">Android Studio</a> <ul><li><a href="/wiki/IntelliJ_IDEA" title="IntelliJ IDEA">IntelliJ IDEA</a></li></ul></li> <li><a href="/wiki/Eclipse_(software)" title="Eclipse (software)">Eclipse</a> <ul><li><a href="/wiki/Eclipse_(software)#Android_Development_Tools" title="Eclipse (software)">Android Development Tools</a> (ADT)</li></ul></li> <li><a href="/wiki/App_Inventor_for_Android" class="mw-redirect" title="App Inventor for Android">App Inventor</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Programming_language" title="Programming language">Languages</a>, <a href="/wiki/Database" title="Database">databases</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Java_(programming_language)" title="Java (programming language)">Java</a></li> <li><a href="/wiki/Kotlin_(programming_language)" title="Kotlin (programming language)">Kotlin</a></li> <li><a href="/wiki/XML" title="XML">XML</a></li> <li><a href="/wiki/C_(programming_language)" title="C (programming language)">C</a></li> <li><a href="/wiki/C%2B%2B" title="C++">C++</a></li> <li><a href="/wiki/SQLite" title="SQLite">SQLite</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Virtual_reality" title="Virtual reality">Virtual reality</a> (VR)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Google_Cardboard" title="Google Cardboard">Cardboard</a></li> <li><a href="/wiki/Google_Daydream" title="Google Daydream">Daydream</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Events, <a href="/wiki/Community_of_practice" title="Community of practice">communities</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Google_I/O" title="Google I/O">Google I/O</a></li> <li><a href="/wiki/Android_Developer_Challenge" title="Android Developer Challenge">Developer Challenge</a></li> <li><a href="/wiki/Android_Developer_Lab" title="Android Developer Lab">Developer Lab</a></li> <li><a href="/wiki/Android_Open_Source_Project" class="mw-redirect" title="Android Open Source Project">Android Open Source Project</a> (AOSP)</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Android_version_history" title="Android version history">Releases</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Android_Cupcake" title="Android Cupcake">Cupcake (1.5)</a></li> <li><a href="/wiki/Android_Donut" title="Android Donut">Donut (1.6)</a></li> <li><a href="/wiki/Android_Eclair" title="Android Eclair">Eclair (2.0–2.1)</a></li> <li><a href="/wiki/Android_Froyo" title="Android Froyo">Froyo (2.2)</a></li> <li><a href="/wiki/Android_Gingerbread" title="Android Gingerbread">Gingerbread (2.3)</a></li> <li><a href="/wiki/Android_Honeycomb" title="Android Honeycomb">Honeycomb (3.x)</a></li> <li><a href="/wiki/Android_Ice_Cream_Sandwich" title="Android Ice Cream Sandwich">Ice Cream Sandwich (4.0)</a></li> <li><a href="/wiki/Android_Jelly_Bean" title="Android Jelly Bean">Jelly Bean (4.1–4.3)</a></li> <li><a href="/wiki/Android_KitKat" title="Android KitKat">KitKat (4.4)</a></li> <li><a href="/wiki/Android_Lollipop" title="Android Lollipop">Lollipop (5.x)</a></li> <li><a href="/wiki/Android_Marshmallow" title="Android Marshmallow">Marshmallow (6.0)</a></li> <li><a href="/wiki/Android_Nougat" title="Android Nougat">Nougat (7.x)</a></li> <li><a href="/wiki/Android_Oreo" title="Android Oreo">Oreo (8.x)</a></li> <li><a href="/wiki/Android_Pie" title="Android Pie">Pie (9)</a></li> <li><a href="/wiki/Android_10" title="Android 10">10</a></li> <li><a href="/wiki/Android_11" title="Android 11">11</a></li> <li><a href="/wiki/Android_12" title="Android 12">12</a></li> <li><a href="/wiki/Android_13" title="Android 13">13</a></li> <li><a href="/wiki/Android_14" title="Android 14">14</a></li> <li><a href="/wiki/Android_15" title="Android 15">15</a></li> <li><a href="/wiki/Android_16" title="Android 16">16</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Derivatives</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Android_Automotive" title="Android Automotive">Android Automotive</a></li> <li><a href="/wiki/Android_Things" title="Android Things">Android Things</a></li> <li><a href="/wiki/Android_TV" title="Android TV">TV</a> <ul><li><a href="/wiki/List_of_Android_TV_devices" title="List of Android TV devices">devices</a></li></ul></li> <li><a href="/wiki/Wear_OS" title="Wear OS">Wear OS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Devices</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Google_Pixel" title="Google Pixel">Pixel</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pixel_C" title="Pixel C">C</a></li> <li><a href="/wiki/Pixel_(1st_generation)" title="Pixel (1st generation)">Pixel & Pixel XL</a></li> <li><a href="/wiki/Pixel_2" title="Pixel 2">2 & 2 XL</a></li> <li><a href="/wiki/Pixel_3" title="Pixel 3">3 & 3 XL</a> <ul><li><a href="/wiki/Pixel_3a" title="Pixel 3a">3a & 3a XL</a></li></ul></li> <li><a href="/wiki/Pixel_4" title="Pixel 4">4 & 4 XL</a> <ul><li><a href="/wiki/Pixel_4a" title="Pixel 4a">4a & 4a (5G)</a></li></ul></li> <li><a href="/wiki/Pixel_5" title="Pixel 5">5</a> <ul><li><a href="/wiki/Pixel_5a" title="Pixel 5a">5a</a></li></ul></li> <li><a href="/wiki/Pixel_6" title="Pixel 6">6 & 6 Pro</a> <ul><li><a href="/wiki/Pixel_6a" title="Pixel 6a">6a</a></li></ul></li> <li><a href="/wiki/Pixel_7" title="Pixel 7">7 & 7 Pro</a> <ul><li><a href="/wiki/Pixel_7a" title="Pixel 7a">7a</a></li></ul></li> <li><a href="/wiki/Pixel_Fold" title="Pixel Fold">Fold</a></li> <li><a href="/wiki/Pixel_Tablet" title="Pixel Tablet">Tablet</a></li> <li><a href="/wiki/Pixel_8" title="Pixel 8">8 & 8 Pro</a> <ul><li><a href="/wiki/Pixel_8a" title="Pixel 8a">8a</a></li></ul></li> <li><a href="/wiki/Pixel_8" title="Pixel 8">9, 9 Pro & 9 Pro XL</a> <ul><li><a href="/wiki/Pixel_9_Pro_Fold" title="Pixel 9 Pro Fold">9 Pro Fold</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Google_Nexus" title="Google Nexus">Nexus</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Nexus_One" title="Nexus One">One</a></li> <li><a href="/wiki/Nexus_S" title="Nexus S">S</a></li> <li><a href="/wiki/Galaxy_Nexus" title="Galaxy Nexus">Galaxy Nexus</a></li> <li><a href="/wiki/Nexus_4" title="Nexus 4">4</a></li> <li><a href="/wiki/Nexus_10" title="Nexus 10">10</a></li> <li><a href="/wiki/Nexus_Q" title="Nexus Q">Q</a></li> <li><a href="/wiki/Nexus_5" title="Nexus 5">5</a> <ul><li><a href="/wiki/Nexus_5X" title="Nexus 5X">5X</a></li></ul></li> <li><a href="/wiki/Nexus_6" title="Nexus 6">6</a> <ul><li><a href="/wiki/Nexus_6P" title="Nexus 6P">6P</a></li></ul></li> <li>7 <ul><li><a href="/wiki/Nexus_7_(2012)" title="Nexus 7 (2012)">2012</a></li> <li><a href="/wiki/Nexus_7_(2013)" title="Nexus 7 (2013)">2013</a></li></ul></li> <li><a href="/wiki/Nexus_9" title="Nexus 9">9</a></li> <li><a href="/wiki/Nexus_Player" title="Nexus Player">Player</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_Google_Play_edition_devices" title="List of Google Play edition devices">Play edition</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HTC_One_(M7)" title="HTC One (M7)">HTC One (M7)</a></li> <li><a href="/wiki/HTC_One_(M8)" title="HTC One (M8)">HTC One (M8)</a></li> <li><a href="/wiki/LG_G_Pad_8.3" title="LG G Pad 8.3">LG G Pad 8.3</a></li> <li><a href="/wiki/Moto_G_(1st_generation)" title="Moto G (1st generation)">Moto G</a></li> <li><a href="/wiki/Samsung_Galaxy_S4" title="Samsung Galaxy S4">Samsung Galaxy S4</a></li> <li><a href="/wiki/Sony_Xperia_Z_Ultra" title="Sony Xperia Z Ultra">Sony Xperia Z Ultra</a></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Android_One" title="Android One">Android One</a></li> <li><a href="/wiki/List_of_Android_smartphones" title="List of Android smartphones">other smartphones</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_custom_Android_distributions" title="List of custom Android distributions">Custom <br /> distributions</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AliOS" title="AliOS">AliOS</a></li> <li><a href="/wiki/Android-x86" title="Android-x86">Android-x86</a> <ul><li><a href="/wiki/Remix_OS" title="Remix OS">Remix OS</a></li></ul></li> <li><a href="/wiki/AOKP" title="AOKP">AOKP</a></li> <li><a href="/wiki/Baidu_Yi" title="Baidu Yi">Baidu Yi</a></li> <li><a href="/wiki/Barnes_%26_Noble_Nook" title="Barnes & Noble Nook">Barnes & Noble Nook</a></li> <li><a href="/wiki/CalyxOS" title="CalyxOS">CalyxOS</a></li> <li><a href="/wiki/ColorOS" title="ColorOS">ColorOS</a> <ul><li><a href="/wiki/Realme" title="Realme">realme UI</a></li></ul></li> <li><a href="/wiki/CopperheadOS" title="CopperheadOS">CopperheadOS</a></li> <li><a href="/wiki/EMUI" title="EMUI">EMUI</a> <ul><li><a href="/wiki/Honor_(brand)" title="Honor (brand)">Magic UI</a></li></ul></li> <li><a href="/wiki/Fire_OS" title="Fire OS">Fire OS</a></li> <li><a href="/wiki/Meizu#Flyme" title="Meizu">Flyme OS</a></li> <li><a href="/wiki/GrapheneOS" title="GrapheneOS">GrapheneOS</a></li> <li><a href="/wiki/Xiaomi_HyperOS" title="Xiaomi HyperOS">Xiaomi HyperOS</a> <ul><li><a href="/wiki/MIUI" title="MIUI">MIUI</a></li> <li><a href="/wiki/POCO_(company)" class="mw-redirect" title="POCO (company)">MIUI for POCO</a></li></ul></li> <li><a href="/wiki/LeWa_OS" title="LeWa OS">LeWa OS</a></li> <li><a href="/wiki/LineageOS" title="LineageOS">LineageOS</a> <ul><li><a href="/wiki//e/_(operating_system)" title="/e/ (operating system)">/e/</a></li> <li><a href="/wiki/CrDroid" title="CrDroid">CrDroid</a></li> <li><a href="/wiki/CyanogenMod" title="CyanogenMod">CyanogenMod</a></li> <li><a href="/wiki/DivestOS" title="DivestOS">DivestOS</a></li> <li><a href="/wiki/Iod%C3%A9OS" title="IodéOS">iodéOS</a></li> <li><a href="/wiki/Kali_NetHunter" title="Kali NetHunter">Kali NetHunter</a></li></ul></li> <li><a href="/wiki/LiteOS" title="LiteOS">LiteOS</a></li> <li><a href="/wiki/Meta_Horizon_OS" title="Meta Horizon OS">Meta Horizon OS</a></li> <li><a href="/wiki/MicroG" title="MicroG">MicroG</a></li> <li><a href="/wiki/Nokia_X_family#Nokia_X_software_platform" title="Nokia X family">Nokia X software platform</a></li> <li><a href="/wiki/OmniROM" title="OmniROM">OmniROM</a></li> <li><a href="/wiki/OPhone" title="OPhone">OPhone</a></li> <li><a href="/wiki/OxygenOS" title="OxygenOS">OxygenOS</a></li> <li><a href="/wiki/PixelExperience" title="PixelExperience">PixelExperience</a></li> <li><a href="/wiki/Google_Pixel#Pixel_UI_(Pixel_Launcher)" title="Google Pixel">Pixel UI</a></li> <li><a href="/wiki/Replicant_(operating_system)" title="Replicant (operating system)">Replicant</a></li> <li><a href="/wiki/Resurrection_Remix_OS" title="Resurrection Remix OS">Resurrection Remix OS</a></li> <li><a href="/wiki/SlimRoms" title="SlimRoms">SlimRoms</a></li> <li><a href="/wiki/TCL_Technology" title="TCL Technology">TCL UI</a></li> <li><a href="/wiki/Ubuntu_for_Android" class="mw-redirect" title="Ubuntu for Android">Ubuntu for Android</a></li> <li><a href="/wiki/XobotOS" title="XobotOS">XobotOS</a></li> <li><a href="/wiki/Lenovo_smartphones" title="Lenovo smartphones">ZUI</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Booting and<br />recovery</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Booting process</a></li> <li><a href="/wiki/Android_recovery_mode" title="Android recovery mode">Recovery mode</a> <ul><li><a href="/wiki/TWRP_(software)" title="TWRP (software)">TWRP</a></li> <li><a href="/wiki/ClockworkMod" title="ClockworkMod">ClockworkMod</a></li></ul></li> <li><a href="/wiki/Fastboot" title="Fastboot">Fastboot</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/API" title="API">APIs</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Google_Maps" title="Google Maps">Google Maps</a></li> <li><a href="/wiki/Google_Play_Services" title="Google Play Services">Google Play Services</a> <ul><li><a href="/wiki/SafetyNet_API" title="SafetyNet API">SafetyNet</a></li></ul></li> <li><a href="/wiki/Google_Search" title="Google Search">Google Search</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Alternative <a href="/wiki/User_interface" title="User interface">UIs</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Asus_ZenUI" class="mw-redirect" title="Asus ZenUI">Asus ZenUI</a></li> <li><a href="/wiki/ColorOS" title="ColorOS">ColorOS</a></li> <li><a href="/wiki/EMUI" title="EMUI">EMUI</a></li> <li><a href="/wiki/Meizu#Flyme" title="Meizu">Flyme OS</a></li> <li><a href="/wiki/Hive_UI" title="Hive UI">XOLO Hive</a></li> <li><a href="/wiki/HTC_Sense" title="HTC Sense">HTC Sense</a></li> <li><a href="/wiki/LG_UX" title="LG UX">LG UX</a> <ul><li><a href="/wiki/Optimus_UI" title="Optimus UI">Optimus UI</a></li></ul></li> <li><a href="/wiki/Motoblur" title="Motoblur">Motoblur</a></li> <li><a href="/wiki/One_UI" title="One UI">One UI</a> <ul><li><a href="/wiki/Samsung_Experience" title="Samsung Experience">Experience</a></li> <li><a href="/wiki/TouchWiz" title="TouchWiz">TouchWiz</a></li></ul></li> <li><a href="/wiki/OxygenOS" title="OxygenOS">OxygenOS</a></li> <li><a href="/wiki/Google_Pixel#Pixel_UI_(Pixel_Launcher)" title="Google Pixel">Pixel UI</a></li> <li>Xperia UI</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rooting_(Android)" title="Rooting (Android)">Rooting</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SuperSU" title="SuperSU">SuperSU</a></li> <li><a href="/wiki/Magisk_(software)" title="Magisk (software)">Magisk</a></li> <li><a href="/wiki/Kingo_Root" title="Kingo Root">Kingo Root</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_custom_Android_distributions" title="List of custom Android distributions">Custom distributions</a></li> <li><a href="/wiki/List_of_features_in_Android" title="List of features in Android">Features</a></li> <li><a href="/wiki/List_of_free_and_open-source_Android_applications" title="List of free and open-source Android applications">Free and open-source applications</a></li> <li><a href="/wiki/List_of_Android_apps_by_Google" title="List of Android apps by Google">Google apps</a></li> <li><a href="/wiki/List_of_Android_launchers" title="List of Android launchers">Launchers</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related topics</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Index_of_Android_OS_articles" title="Index of Android OS articles">Index of articles</a></li> <li><a href="/wiki/Androidland" title="Androidland">Androidland</a></li> <li><a href="/wiki/Chromecast" title="Chromecast">Chromecast</a></li> <li><a href="/wiki/Google" title="Google">Google</a></li> <li><a href="/wiki/Comparison_of_Java_and_Android_API" title="Comparison of Java and Android API">Java vs. Android API</a></li> <li><a href="/wiki/Android_lawn_statues" title="Android lawn statues">Lawn statues</a></li> <li><a href="/wiki/BlueStacks" title="BlueStacks">BlueStacks</a></li> <li>Legal issues <ul><li><i><a href="/wiki/Google_LLC_v._Oracle_America,_Inc." title="Google LLC v. Oracle America, Inc.">Google v. Oracle</a></i></li> <li><a href="/wiki/Smartphone_patent_wars" title="Smartphone patent wars">smartphone patent wars</a></li></ul></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Android_(operating_system)_development_software" title="Category:Android (operating system) development software">Category:Android development</a></li> <li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Mobile_telecommunications" title="Category:Mobile telecommunications">Category:Mobile telecommunications</a></li> <li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a href="/wiki/Portal:Software" class="mw-redirect" title="Portal:Software">Software portal</a></li> <li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a href="/wiki/Portal:Telecommunication" title="Portal:Telecommunication">Telecommunication portal</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Firmware_and_booting" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Firmware_and_booting" title="Template:Firmware and booting"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Firmware_and_booting" title="Template talk:Firmware and booting"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Firmware_and_booting" title="Special:EditPage/Template:Firmware and booting"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Firmware_and_booting" style="font-size:114%;margin:0 4em"><a href="/wiki/Firmware" title="Firmware">Firmware</a> and <a href="/wiki/Booting" title="Booting">booting</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Processes</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Booting_process_of_Windows" title="Booting process of Windows">Windows</a></span> <ul><li><span class="nowrap"><a href="/wiki/Architecture_of_Windows_9x#Boot_sequence" title="Architecture of Windows 9x">9x</a></span></li> <li><span class="nowrap"><a href="/wiki/Booting_process_of_Windows_NT" class="mw-redirect" title="Booting process of Windows NT">NT</a></span></li></ul></li> <li><span class="nowrap"><a href="/wiki/Booting_process_of_Linux" title="Booting process of Linux">Linux</a></span> <ul><li><span class="nowrap"><a class="mw-selflink selflink">Android</a></span></li></ul></li></ul> </div></td><td class="noviewer navbox-image" rowspan="10" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg/100px-WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg" decoding="async" width="100" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg/150px-WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f8/WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg/200px-WD_Blue_WD5000LPVX_-_controller_-_Winbond_25X20CLVIG-0182.jpg 2x" data-file-width="1535" data-file-height="1535" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Booting <a href="/wiki/Firmware#Computers" title="Firmware">firmware</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Proprietary_firmware" title="Proprietary firmware">Proprietary firmware</a></span></li> <li><span class="nowrap"><a href="/wiki/Open-source_firmware" title="Open-source firmware">Open-source firmware</a></span></li> <li><span class="nowrap"><a href="/wiki/Custom_firmware" title="Custom firmware">Custom firmware</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Interfaces</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/UEFI" title="UEFI">UEFI</a></span></li> <li><span class="nowrap"><a href="/wiki/BIOS" title="BIOS">BIOS</a></span> <ul><li><span class="nowrap"><a href="/wiki/Video_BIOS" title="Video BIOS">Video BIOS</a></span></li></ul></li> <li><span class="nowrap"><a href="/wiki/Open_Firmware" title="Open Firmware">Open Firmware</a></span></li> <li><span class="nowrap"><a href="/wiki/ACPI" title="ACPI">ACPI</a></span></li> <li><span class="nowrap"><a href="/wiki/MultiProcessor_Specification" title="MultiProcessor Specification">MultiProcessor Specification</a></span></li> <li><span class="nowrap"><a href="/wiki/Advanced_Power_Management" title="Advanced Power Management">APM</a></span></li> <li><span class="nowrap"><a href="/wiki/Legacy_Plug_and_Play" title="Legacy Plug and Play">Legacy Plug and Play</a></span></li> <li><span class="nowrap"><a href="/wiki/ARC_(specification)" title="ARC (specification)">AlphaBIOS</a></span></li> <li><span class="nowrap"><a href="/wiki/SRM_firmware" title="SRM firmware">SRM</a></span></li> <li><span class="nowrap"><a href="/wiki/Simple_Firmware_Interface" title="Simple Firmware Interface">SFI</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Implementations</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/SeaBIOS" title="SeaBIOS">SeaBIOS</a></span></li> <li><span class="nowrap"><a href="/wiki/Award_Software" title="Award Software">Award BIOS</a></span></li> <li><span class="nowrap"><a href="/wiki/American_Megatrends" title="American Megatrends">American Megatrends</a></span> <ul><li><span class="nowrap"><a href="/wiki/AMIBIOS" class="mw-redirect" title="AMIBIOS">AMIBIOS</a></span></li> <li><span class="nowrap"><a href="/wiki/AMI_Aptio" class="mw-redirect" title="AMI Aptio">AMI Aptio</a></span></li></ul></li> <li><span class="nowrap"><a href="/wiki/Insyde_Software" title="Insyde Software">InsydeH2O</a></span></li> <li><span class="nowrap"><a href="/wiki/Phoenix_Technologies" title="Phoenix Technologies">Phoenix SecureCore UEFI</a></span></li> <li><span class="nowrap"><a href="/wiki/TianoCore_EDK_II" title="TianoCore EDK II">TianoCore EDK II</a></span></li> <li><span class="nowrap"><a href="/wiki/OpenBIOS" title="OpenBIOS">OpenBIOS</a></span></li> <li><span class="nowrap"><a href="/wiki/Coreboot" title="Coreboot">Coreboot</a></span></li> <li><span class="nowrap"><a href="/wiki/Libreboot" title="Libreboot">Libreboot</a></span></li> <li><span class="nowrap"><a href="/wiki/LinuxBoot" title="LinuxBoot">LinuxBoot</a></span></li> <li><span class="nowrap"><a href="/wiki/Kickstart_(Amiga)" title="Kickstart (Amiga)">Kickstart</a></span></li> <li><span class="nowrap"><a href="/wiki/Run-Time_Abstraction_Services" title="Run-Time Abstraction Services">Run-Time Abstraction Services</a></span></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Hybrid firmware bootloader</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Common_Firmware_Environment" title="Common Firmware Environment">Common Firmware Environment</a> </span></li> <li><span class="nowrap"><a href="/wiki/Das_U-Boot" title="Das U-Boot">Das U-Boot</a></span></li> <li><span class="nowrap"><a href="/wiki/ARCS_(computing)" title="ARCS (computing)">ARCS</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Bootloaders" class="mw-redirect" title="Bootloaders">Bootloaders</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Bootloader_unlocking" title="Bootloader unlocking">Bootloader unlocking</a></span></li> <li><span class="nowrap"><a href="/wiki/Comparison_of_bootloaders" title="Comparison of bootloaders">Comparison of bootloaders</a></span></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Implementations" scope="row" class="navbox-group" style="width:1%">Implementations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Acronis_OS_Selector" class="mw-redirect" title="Acronis OS Selector">Acronis OS Selector</a></span></li> <li><span class="nowrap"><a href="/wiki/Barebox" title="Barebox">Barebox</a></span></li> <li><span class="nowrap"><a href="/wiki/BootManager" class="mw-redirect" title="BootManager">BootManager</a></span></li> <li><span class="nowrap"><a href="/wiki/BootX_(Apple)" title="BootX (Apple)">BootX (Apple)</a></span></li> <li><span class="nowrap"><a href="/wiki/BootX_(Linux)" title="BootX (Linux)">BootX (Linux)</a></span></li> <li><span class="nowrap"><a href="/wiki/GNU_GRUB" title="GNU GRUB">GNU GRUB</a></span></li> <li><span class="nowrap"><a href="/wiki/IBoot" title="IBoot">iBoot</a></span></li> <li><span class="nowrap"><a href="/wiki/Systemd-boot" title="Systemd-boot">systemd-boot</a></span></li> <li><span class="nowrap"><a href="/wiki/Loadlin" title="Loadlin">loadlin</a></span></li> <li><span class="nowrap"><a href="/wiki/NTLDR" title="NTLDR">NTLDR</a></span></li> <li><span class="nowrap"><a href="/wiki/OpeniBoot" title="OpeniBoot">OpeniBoot</a></span></li> <li><span class="nowrap"><a href="/wiki/RedBoot" title="RedBoot">RedBoot</a></span></li> <li><span class="nowrap"><a href="/wiki/REFInd" title="REFInd">rEFInd</a></span></li> <li><span class="nowrap"><a href="/wiki/REFIt" title="REFIt">rEFIt</a></span></li> <li><span class="nowrap"><a href="/wiki/SYSLINUX" title="SYSLINUX">SYSLINUX</a></span></li> <li><span class="nowrap"><a href="/wiki/Windows_Boot_Manager" title="Windows Boot Manager">Windows Boot Manager</a></span></li> <li><span class="nowrap"><a href="/wiki/XOSL" title="XOSL">xOSL</a></span></li> <li><span class="nowrap"><a href="/wiki/Yaboot" title="Yaboot">Yaboot</a></span></li> <li><span class="nowrap"><a href="/wiki/Plop_Boot_Manager" title="Plop Boot Manager">Plop Boot Manager</a></span></li> <li><span class="nowrap"><a href="/wiki/MILO_(bootloader)" title="MILO (bootloader)">MILO</a></span></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Partition layouts</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/GUID_Partition_Table" title="GUID Partition Table">GUID Partition Table</a></span></li> <li><span class="nowrap"><a href="/wiki/Master_boot_record" title="Master boot record">Master boot record</a></span></li> <li><span class="nowrap"><a href="/wiki/Apple_Partition_Map" title="Apple Partition Map">Apple Partition Map</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/System_partition_and_boot_partition" title="System partition and boot partition">Partitions</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/EFI_system_partition" title="EFI system partition">EFI system partition</a></span></li> <li><span class="nowrap"><a href="/wiki/BIOS_boot_partition" title="BIOS boot partition">BIOS boot partition</a></span></li> <li><span class="nowrap"><a href="/wiki//boot/" title="/boot/">/boot/</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Utilities</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Software</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Flashrom_(utility)" title="Flashrom (utility)">flashrom</a></span></li> <li><span class="nowrap"><a href="/wiki/Fwupd" title="Fwupd">fwupd</a></span></li> <li><span class="nowrap"><a href="/wiki/UEFITool" title="UEFITool">UEFITool</a></span></li> <li><span class="nowrap"><a href="/wiki/Odin_(firmware_flashing_software)" title="Odin (firmware flashing software)">Odin</a></span> <ul><li><span class="nowrap"><a href="/wiki/Odin_(firmware_flashing_software)#Heimdall" title="Odin (firmware flashing software)">Heimdall</a></span></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Hardware</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Bus_Pirate" title="Bus Pirate">Bus Pirate</a></span></li> <li><span class="nowrap"><a href="/wiki/Raspberry_Pi" title="Raspberry Pi">Raspberry Pi</a></span></li> <li><span class="nowrap"><a href="/wiki/FTDI" title="FTDI">ft2232</a></span></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Network_booting" title="Network booting">Network boot</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Preboot_Execution_Environment" title="Preboot Execution Environment">Preboot Execution Environment</a></span> <ul><li><span class="nowrap"><a href="/wiki/GPXE" title="GPXE">gPXE</a></span></li> <li><span class="nowrap"><a href="/wiki/IPXE" title="IPXE">iPXE</a></span></li></ul></li> <li><span class="nowrap"><a href="/wiki/NetBoot" title="NetBoot">NetBoot</a></span></li> <li><span class="nowrap"><a href="/wiki/Remote_Initial_Program_Load" title="Remote Initial Program Load">Remote Initial Program Load</a></span></li> <li><span class="nowrap"><a href="/wiki/Wake-on-LAN" title="Wake-on-LAN">Wake-on-LAN</a></span></li> <li><span class="nowrap"><a href="/wiki/Wake-on-ring" title="Wake-on-ring">Wake-on-ring</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">ROM variants</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Read-only_memory" title="Read-only memory">ROM</a></span></li> <li><span class="nowrap"><a href="/wiki/Programmable_ROM" title="Programmable ROM">PROM</a></span></li> <li><span class="nowrap"><a href="/wiki/EPROM" title="EPROM">EPROM</a></span></li> <li><span class="nowrap"><a href="/wiki/EEPROM" title="EEPROM">EEPROM</a></span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Boot_ROM" title="Boot ROM">Boot ROM</a></span></li> <li><span class="nowrap"><a href="/wiki/ROM_hacking" title="ROM hacking">ROM hacking</a></span></li> <li><span class="nowrap"><a href="/wiki/ROM_image" title="ROM image">ROM image</a></span></li> <li><span class="nowrap"><a href="/wiki/Execute_in_place" title="Execute in place">Execute in place</a></span></li> <li><span class="nowrap"><a href="/wiki/Devicetree" title="Devicetree">Devicetree</a></span></li> <li><span class="nowrap"><a href="/wiki/Fastboot" title="Fastboot">Fastboot</a></span></li> <li><span class="nowrap"><a href="/wiki/Instant-on" title="Instant-on">Instant-on</a></span></li> <li><span class="nowrap"><a href="/wiki/Power-on_self-test" title="Power-on self-test">Power-on self-test</a></span></li> <li><span class="nowrap"><a href="/wiki/Qualcomm_EDL_mode" title="Qualcomm EDL mode">EDL mode</a></span></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" 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