Mounting specific partition from inside a disk image in linux.

Step 1 :  Find the partition structure in the disk image file.

# fdisk -lu disk.img

Screenshot_2016-11-08_14-15-55

Step 2 : The screen above says that 1 sector = 512 bytes, so if you want to mount the third partition in this, use the math :

Partition stating point = offset x 512 = 17803264 * 512 . Then use the following command.

# /sbin/losetup /dev/loop1 disk.img -o $((17803264 * 512))
# mount -o ro /dev/loop1 /mnt/target

If the partition contains a real filesystem, you should be able to access the data in the partition. Once you are done, you can use the command to clear the device node.

# umount /mnt/target
# losetup -d /dev/loop1

Hope this helps you !! Thanks.

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