https://wiki.thatoldtech.net/index.php?action=history&feed=atom&title=Virtualize_disk_with_minimal_space 2026-04-14T14:21:25Z Revision history for this page on the wiki MediaWiki 1.45.3 https://wiki.thatoldtech.net/index.php?title=Virtualize_disk_with_minimal_space&diff=74&oldid=prev 2022-08-08T10:44:25Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:44, 8 August 2022</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Clean things up</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Clean things up</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Boot from separate media e.g. boot-repair live iso, shrink partition to desired size with gparted  </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Boot from separate media e.g. boot-repair live iso, shrink partition to desired size with gparted  </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* On other system connect disk, check partition layout with fdisk -l, dd if=source of=file bs=[Units in fdisk] count=[end of last partition +1 to cover last +33 for backup gpt table] (https://serverfault.com/a/853753 https://forums.raspberrypi.com/viewtopic.php?t=288670#p1745543)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* On other system connect disk, check partition layout with fdisk -l, dd if=source of=file bs=[Units in fdisk] count=[end of last partition +1 to cover last +33 for backup gpt table <ins style="font-weight: bold; text-decoration: none;">if gpt</ins>] (https://serverfault.com/a/853753 https://forums.raspberrypi.com/viewtopic.php?t=288670#p1745543)</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Boot from separate media with image attached, gparted likely will show unpartitioned</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* Boot from separate media with image attached, gparted likely will show unpartitioned</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del style="font-weight: bold; text-decoration: none;">Use </del>sgdisk -e /dev/disk to recreate backup gpt partition table at end of disk (https://askubuntu.com/a/1370440)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins style="font-weight: bold; text-decoration: none;">If GPT disk: use </ins>sgdisk -e /dev/disk to recreate backup gpt partition table at end of disk (https://askubuntu.com/a/1370440)</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* If wanting to make a sparse qcow2 image:</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">** Mount image, fill empty space with zeroes with dd if=/dev/zero of=tmpfile, rm tmpfile</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">** qemu-img convert -f raw -O qcow2 -S 4k [source] [dest]</ins></div></td></tr> <!-- diff cache key my_wiki-wk:diff:1.41:old-73:rev-74:php=table --> </table>

Admin https://wiki.thatoldtech.net/index.php?title=Virtualize_disk_with_minimal_space&diff=73&oldid=prev 2022-08-03T21:48:08Z

<p>Created page with &quot;* Clean things up * Boot from separate media e.g. boot-repair live iso, shrink partition to desired size with gparted * On other system connect disk, check partition layout w...&quot;</p> <p><b>New page</b></p><div>* Clean things up<br /> * Boot from separate media e.g. boot-repair live iso, shrink partition to desired size with gparted <br /> * On other system connect disk, check partition layout with fdisk -l, dd if=source of=file bs=[Units in fdisk] count=[end of last partition +1 to cover last +33 for backup gpt table] (https://serverfault.com/a/853753 https://forums.raspberrypi.com/viewtopic.php?t=288670#p1745543)<br /> * Boot from separate media with image attached, gparted likely will show unpartitioned<br /> * Use sgdisk -e /dev/disk to recreate backup gpt partition table at end of disk (https://askubuntu.com/a/1370440)</div>

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