How to mount the file image.dd

snowmagician · 12-31-2016, 12:40 PM

I was able to rescue the partition with the testdisk utility on Knoppix, and it did give me a file named image.dd and its size is roughly 350 GB

How do I mount it so I can access the files inside the image.dd? I notice there are two commands I can use - kpartx and losetup but not sure which command to use. It appears kpartx will use losetup if necessary

ugjka · 12-31-2016, 12:56 PM

try plain mount /path/to/image destination/

rknichols · 12-31-2016, 02:17 PM

It depends on what you actually saved. If it was the complete partitioned disk, then you need to run "kpartx -av /path/to/image.dd" to get the internal partitions mapped as devices under /dev/mapper. Then you can mount those just like any other device. If it was just the one partition, then you do not use kpartx, and you need to use the "--loop" option on the mount command

Code:

mount -o loop /path/to/image.dd /path/to/mount/point

Brains · 01-01-2017, 02:47 AM

Just to add, although the OP mentioned just a partition image, for a full disk image you need to find the offset of the partition to specify where on the disk image is the start of the partition you want to mount as in the example below, in case you want to mount all partitions and not extract them.

Code:

STEPS FOR MOUNTING PARTITION OF IMAGE.DD FILE FROM IN SAME DIRECTORY AS ROOT OR SUDO:

1: mkdir /mnt/image
2: sfdisk -l -uS image.dd
3: mount -oloop,offset=32256 image.dd /mnt/image

OFFSET = Sectors offset of beginning sector of partition multiplied by 512, in this case the first partition starts at offset 63.

rknichols · 01-01-2017, 08:50 AM

Quote:

Originally Posted by Brains

Just to add, although the OP mentioned just a partition image, for a full disk image you need to find the offset of the partition to specify where on the disk image is the start of the partition you want to mount

You can do it that way, or you can let kpartx parse the partition table and create /dev/mapper devices for each of the partitions in the image.