[2024-feb-29] Sad news: Eric Layton aka Nocturnal Slacker aka vtel57 passed away on Feb 26th, shortly after hospitalization. He was one of our Wiki's most prominent admins. He will be missed.
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howtos:general_admin:resize_a_qemu_raw_image_with_an_ntfs_filesytem [2013/12/15 00:59 (UTC)] – created allend | howtos:general_admin:resize_a_qemu_raw_image_with_an_ntfs_filesytem [2013/12/15 06:18 (UTC)] (current) – [Use ntfsresize to resize the NTFS partition] allend | ||
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===== Use qemu-img to resize the QEMU raw disk image ===== | ===== Use qemu-img to resize the QEMU raw disk image ===== | ||
- | This command increases the size of the disk image in the file Windows_XP_Professional_SP_3.img by 1GB | + | This command increases the size of the disk image in the file Windows_XP_Professional_SP_3.img by 1GB. |
< | < | ||
- | After this command, if you boot your virtual machine, you will see that there is an additional | + | After this command, if you boot your virtual machine, you will see that there is an additional 1GB of free disk space available. |
===== Find the offset into the image ===== | ===== Find the offset into the image ===== | ||
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Loop mount the image. | Loop mount the image. | ||
- | < | + | < |
- | Inspect the partition table (here parted is used but fdisk or cfdisk can also be used) | + | Inspect the partition table (here parted is used but fdisk or cfdisk can also be used). |
< | < | ||
- | Within parted set the units to sectors | + | Within parted, set the units to sectors, then print the current partition table. |
< | < | ||
(parted) print </ | (parted) print </ | ||
- | The output will look something like this | + | The output will look something like this: |
< | < | ||
Disk /dev/loop0: 12582912s | Disk /dev/loop0: 12582912s | ||
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</ | </ | ||
- | Note the Sector size and Start sector numbers. | + | Note the Sector size and Start sector numbers |
- | Now quit parted | + | Now quit parted. |
< | < | ||
- | Delete the loop device | + | Delete the loop device. |
< | < | ||
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===== Use ntfsresize to resize the NTFS partition ===== | ===== Use ntfsresize to resize the NTFS partition ===== | ||
- | Loop mount the NTFS partition to be extended, using an offset calculated from the sector size and start sector. | + | Loop mount the NTFS partition to be resized, using an offset calculated from the sector size and start sector. |
< | < | ||
- | First do a dry run | + | First do a dry run. |
< | < | ||
- | If all is OK, do it for real | + | If all is OK, do it for real. |
< | < | ||
- | Delete the loop device | + | Delete the loop device. |
< | < | ||
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===== Update the partition table ===== | ===== Update the partition table ===== | ||
- | Loop mount the image | + | Loop mount the image. |
< | < | ||
- | Update the partition table using parted (both fdisk and cfdisk appear to fail here) | + | Update the partition table using parted (both fdisk and cfdisk appear to fail here). |
< | < | ||
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< | < | ||
- | Delete the loop device | + | Delete the loop device. |
< | < | ||
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===== Finish up ===== | ===== Finish up ===== | ||
- | Boot the virtual machine and allow the Windows chkdsk program to run | + | Boot the virtual machine and allow the Windows chkdsk program to run. |