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I've used ddrescue successfully in the past but I'm having no luck this time. Usually, I make an image of the partition, run a fsck or whatever else on the image to fix file system errors, mount it and I'm good to go. However, this image is not able to be mounted. When I try to mount it in Linux, using...

mount -t ntfs -o loop image.img /mnt/img

I get this message...

NTFS signature is missing.

Failed to mount '/dev/loop/0': Invalid argument

The device '/dev/loop/0' doesn't seem to have a valid NTFS.

I have tried with -t ntfs-3g as well and it makes no difference. I've even tried mounting the image in Windows so I could run chkdsk on it but it shows as a raw volume. I have tried testdisk and it doesn't see a proper NTFS partition. One thing that is odd in testdisk is that it is showing the drive size as 317 / 295 GiB. I'm still trying to figure out testdisk but any help would be appreciated. I really don't have a good understanding of hard drives so I may have omitted something that's important in figuring this out. If so please let me know and I will update the question. Thanks!

-- Adding output from sfdisk -l --

Device Boot Start End #cyls #blocks Id System

/dev/sda1 * 0+ 12- 13- 102400 7 HPFS/NTFS/exFAT

/dev/sda2 12+ 38650- 38639- 310360064 7 HPFS/NTFS/exFAT

/dev/sda3 38651 38912 262 2104515 c W95 FAT32 (LBA)

/dev/sda4 0 - 0 0 0 Empty

I need data from sda2.

share|improve this question
How big is the disk you are cloning and how big is the HD? What is the output of fdisk -l? You may also take a look at dd_rescue. –  jmreicha Mar 26 '13 at 13:49
@jmreicha I added the output from sfdisk -l to the question above. For some reason fdisk just freezes but sfdisk worked fine. –  Vincent Mar 26 '13 at 15:44
Take a look at this, rackerhacker.com/2010/12/14/…. This guy says you may have to mount the partition at the offset in order to get it to work correctly. –  jmreicha Mar 26 '13 at 17:56

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