Languages/shell/mount-o
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dd if=/dev/zero of=/tmp/image.bin bs=1M count=512 # a new 512M image | dd if=/dev/zero of=/tmp/image.bin bs=1M count=512 # a new 512M image | ||
mkfs.ext4 -F /tmp/image.bin # "format" the disk image, works as a normal user ! | mkfs.ext4 -F /tmp/image.bin # "format" the disk image, works as a normal user ! | ||
| + | </source> | ||
| + | |||
| + | = mount a multi-partition disk image = | ||
| + | <source lang='bash'> | ||
| + | modprobe nbd max_part=16 # this module is used to mount image of disks (not only partitions) | ||
| + | mkdir /tmp/toto # create a temporary directory | ||
| + | qemu-nbd -c /dev/nbd0 image.bin # this must be a full disk copy, including partitions | ||
| + | mount /dev/nbd0p1 /tmp/toto # p1 is the first parition and so on | ||
| + | # when done : | ||
| + | umount /tmp/toto | ||
| + | qemu-nbd -d /dev/nbd0 | ||
</source> | </source> | ||
Revision as of 13:42, 2 March 2015
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Mounting a filesystem image for editing
# Create a destination directory mkdir /tmp/toto # Mount your existing filesystem image into it sudo mount -o loop image.bin /tmp/toto # Now you can see what is in this filesystem image and change the files ;) # Don't forget to umount when you're done
Unmounting
sudo umount /tmp/toto
Create an ext4 image from a sdcard
sudo dd if=/dev/sdcard of=/tmp/image.bin
Restore the sdcard
sudo dd if=/tmp/image.bin of=/dev/sdcard
Creating an empty partitiion image
dd if=/dev/zero of=/tmp/image.bin bs=1M count=512 # a new 512M image mkfs.ext4 -F /tmp/image.bin # "format" the disk image, works as a normal user !
mount a multi-partition disk image
modprobe nbd max_part=16 # this module is used to mount image of disks (not only partitions) mkdir /tmp/toto # create a temporary directory qemu-nbd -c /dev/nbd0 image.bin # this must be a full disk copy, including partitions mount /dev/nbd0p1 /tmp/toto # p1 is the first parition and so on # when done : umount /tmp/toto qemu-nbd -d /dev/nbd0
