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I have a complete disk image (dd if=/dev/sda of=foo.bin) that contains several partitions and LVM logical volumes on which there are ext4 filesystems. How do I mount one of the filesystems on this diskimage?

I have the output of fdisk -l from when the image was made.

I assume I have to use a loopback device somehow, but I am not sure how to do it when I have the entire device as an image and not just one filesystem.

Hope you can help.

Operating system is Linux.

Thomas
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2 Answers2

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Try to use kpartx, which will export the partitions on the image as device nodes, which you can simply mount.

  1. Get the list of available partitions with kpartx -l imagefile.
  2. Activate the mapping with kpartx -a imagefile
  3. Mount the partition. The nodes are in /dev/mapper.
  4. Do stuff.
  5. Unmount.
  6. Unmap with kpartx -d imagefile.

For more infos, see man kpartx.

Sven
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it can be done out of the box using a combination of fdisk and dd. First, use fdisk's p command to show partition boundaries, then do 

dd if=device-image.bin of=partition-image.bin skip=<number in Start column> count=<number in Sectors column>
Dmitry Vyal
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