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class="mw-page-title-main">Boot image</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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#a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Boot_image" title="Special:EditPage/Boot image">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Boot+image%22">"Boot image"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Boot+image%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Boot+image%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Boot+image%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Boot+image%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Boot+image%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">July 2011</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>A <b>boot image</b> is a type of <a href="/wiki/Disk_image" title="Disk image">disk image</a> that when on a <a href="/wiki/Boot_device" class="mw-redirect" title="Boot device">boot device</a> allows the associated <a href="/wiki/Computer" title="Computer">computer</a> to <a href="/wiki/Booting" title="Booting">boot</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>A boot image usually includes an operating system, utilities, diagnostics, boot and data recovery information and applications used organization-wide. A specialized image for a particular department or type of user may be called a <i>departmental boot image</i>. Building such an image can take days or weeks, and involve complex decisions about licensing and permissions - including which passwords to store in the boot image and which to require users to type in - and requires experts in <a href="/wiki/Software_integration" class="mw-redirect" title="Software integration">software integration</a> to do. </p><p>However, once built, the boot image can be simply copied onto devices, patched within reasonable limits, and remains disposable in case of any problems (<a href="/wiki/Computer_virus" title="Computer virus">viruses</a> in particular). This is possible because unlike other hard drive images (which may contain any data, et al.), pure boot images contain no mission-critical data. By definition a pure boot image contains no data that cannot be reproduced from configurations or off-the-shelf executables. In particular end-user data is not part of a boot image, although some operating systems require that a copy of user preferences or configuration files be kept within the boot image itself, e.g. <a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a> <a href="/wiki/Windows_registry" class="mw-redirect" title="Windows registry">registry</a>. Utilities like <a href="/wiki/Norton_Ghost" class="mw-redirect" title="Norton Ghost">Norton Ghost</a> keep a backup copy of the boot image, for quick re-imaging (often called re-installation) in the event of a problem, thus avoiding the need to diagnose a specific problem with a specific machine. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="As_virtual_machine">As virtual machine</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boot_image&action=edit&section=1" title="Edit section: As virtual machine"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some <a href="/wiki/Virtual_machine" title="Virtual machine">virtual machine</a> infrastructure can directly import and export a <b>boot image</b> for direct installation to "bare metal", i.e. a disk. This is the standard technique for <a href="/wiki/OEM" class="mw-redirect" title="OEM">OEMs</a> to install identical copies of an operating system on many identical machines: The boot image is created as a virtual machine and then exported, or created on one disk and then copied via a <a href="/wiki/Boot_image_control" class="mw-redirect" title="Boot image control">boot image control</a> infrastructure that also makes <a href="/wiki/Virtual_machine" title="Virtual machine">virtual machine</a> copies. The <a href="/wiki/VMware_vCenter_Converter" class="mw-redirect" title="VMware vCenter Converter">VMware vCenter Converter</a> for instance lets users "convert physical machines to virtual machines - for free"<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> as part of that company's suite of products to make images easier to back up and manage. Equivalents exist for <a href="/wiki/Xen" title="Xen">Xen</a> and other VM systems. </p> <div class="mw-heading mw-heading2"><h2 id="Goals">Goals</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Boot_image&action=edit&section=2" title="Edit section: Goals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>By keeping the boot image entirely separate and disposable, and mandating boot image control, organizations seek to keep their <a href="/wiki/Total_cost_of_operations" class="mw-redirect" title="Total cost of operations">total cost of operations</a> (including its <a href="/wiki/Total_cost_of_ownership" title="Total cost of ownership">total cost of ownership</a> component) low. Often such organizations look at <a href="/w/index.php?title=Uptime_as_a_service&action=edit&redlink=1" class="new" title="Uptime as a service (page does not exist)">uptime as a service</a>. </p><p>One goal of boot image control is to minimize the number of boot images used by an organization to reduce support costs. It includes at least: </p> <ul><li>Specifying the machine hardware to minimize unneeded machine diversity and minimize the resultant number of boot images.</li> <li>Upgrading new machine specifications at low additional cost ensures that they will remain useful long past their normal life. Extending the life of desktop machines will reduce the incursion of off-spec machines later in the life-cycle, improving standardization, reducing support costs, minimizing <a href="/wiki/Electronic_waste" title="Electronic waste">e-waste</a>.</li> <li>Organizing the network so that boot images can be efficiently supported, independent of data. Data must not be dependent on <a href="/wiki/Boot_device" class="mw-redirect" title="Boot device">boot devices</a>. Use networks to store data on secure servers.</li> <li>Hardware <a href="/wiki/Acceptance_testing" title="Acceptance testing">acceptance testing</a> on each new machine confirms that it is fit for use in a standardized boot image environment.</li> <li>Boot image installation to ensure that only supportable standardized boot images are used.</li> <li><a href="/wiki/Troubleshooting" title="Troubleshooting">Troubleshooting</a> and help desk functions employ standardized tests to identify the source of problems: boot, software, or hardware.</li> <li><a href="/w/index.php?title=Desktop_system_recovery&action=edit&redlink=1" class="new" title="Desktop system recovery (page does not exist)">Desktop system recovery</a> tools and procedures for failed desktop units. These would use backup copies of a boot image created with utilities such as <a href="/wiki/Norton_Ghost" class="mw-redirect" title="Norton Ghost">Norton Ghost</a>. In a large organization with many compatible machines, rapid recovery by replacing with a backup boot image may only take a few minutes, with considerable cost savings.</li> <li>Data backup and recovery procedures ensure data is stored in the right place so that it can be recovered promptly in crisis situations.</li> <li>Installing <a href="/wiki/Services_for_the_disabled" class="mw-redirect" title="Services for the disabled">services for the disabled</a> with a single boot image in a manner that is ubiquitous and cost effective, meeting the needs of all staff regardless of disability, with available technology services.</li> <li><a href="/wiki/Remote_work" title="Remote work">Remote work</a> and secure off-site system access procedures.</li> <li>Facilitating worker transfer by changing boots or authorizations instead of moving machines.</li> <li>Using <a href="/wiki/Thin_client" title="Thin client">thin clients</a> for off-spec machines to eliminate the need for special boot images.</li></ul> <p>Many organizations use thin clients for applications which require high security, involve unreliable users or repurpose older machines for continued use. </p><p>A cascading strategy involves re-imaging older, off-spec machines to thin client boot images so that they may continue in use for some less demanding or more access-controlled applications. </p> <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=Boot_image&action=edit&section=3" title="Edit section: References"><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 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.cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.smart-projects.net/help.php?help=295">"Bootable CD/ DVD"</a>. Isobuster<span class="reference-accessdate">. Retrieved <span class="nowrap">20 June</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Bootable+CD%2F+DVD&rft.pub=Isobuster&rft_id=http%3A%2F%2Fwww.smart-projects.net%2Fhelp.php%3Fhelp%3D295&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoot+image" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.vmware.com/products/converter/">"VMware vCenter Converter, Convert Physical Machines to Virtual Machines"</a>. Vmware.com<span class="reference-accessdate">. Retrieved <span class="nowrap">2012-08-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=VMware+vCenter+Converter%2C+Convert+Physical+Machines+to+Virtual+Machines&rft.pub=Vmware.com&rft_id=http%3A%2F%2Fwww.vmware.com%2Fproducts%2Fconverter%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABoot+image" class="Z3988"></span></span> </li> </ol></div></div> <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=Boot_image&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Disk_cloning" title="Disk cloning">Disk cloning</a></li> <li><a href="/wiki/El_Torito_(CD-ROM_standard)" class="mw-redirect" title="El Torito (CD-ROM standard)">El Torito (CD-ROM standard)</a></li> <li><a href="/wiki/Protected_Area_Run_Time_Interface_Extension_Services" class="mw-redirect" title="Protected Area Run Time Interface Extension Services">Protected Area Run Time Interface Extension Services</a> (PARTIES)</li> <li><a href="/wiki/Floppy_Disk" class="mw-redirect" title="Floppy Disk">Floppy Disk</a></li> <li><a href="/wiki/Hard_disk_drive" title="Hard disk drive">Hard Drive</a></li> <li><a href="/wiki/SSD" class="mw-redirect" title="SSD">SSD</a></li> <li><a href="/wiki/Bootup" class="mw-redirect" title="Bootup">Bootup</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Boot_image&oldid=1250352659">https://en.wikipedia.org/w/index.php?title=Boot_image&oldid=1250352659</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Booting" title="Category:Booting">Booting</a></li><li><a href="/wiki/Category:Disk_images" title="Category:Disk images">Disk images</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Articles_needing_additional_references_from_July_2011" title="Category:Articles needing additional references from July 2011">Articles needing additional references from July 2011</a></li><li><a href="/wiki/Category:All_articles_needing_additional_references" title="Category:All articles needing additional references">All articles needing additional references</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 9 October 2024, at 22:38<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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