hi, i'm really stuck. I mounted .img file to my disk partition and I damaged my partitions. I wanted to just extract img but my data from hdd dissapeared. I can't boot system. The disk manager programs says that they cannot recognize partition information. The command was: mount file.img /dev/sda2 .Please how can I recover my partition? All my data are there. Thank you for help

Hello and welcome to LQ, hope you like it here.


Only mounting a file should not damage partitions or partition layout as far as I know. You must have done more than mounting.


What disk manager program? What is the exact error? Do you by any chance have a full backup of the harddisk or the MBR plus partition table? If not boot a Live CD like KNOPPIX and run 'man gpart' to get aquainted with 'gpart' before running it.


Next time create a temporary directory: 'mkdir /mnt/temp', then mount it with 'losetup /dev/loop0 /path/to/file.img; mount /dev/loop0 /mnt/temp'. Maybe a bit more complex but less prone to SNAFUs.

unSpawnThank's for the reply
Im think so, but I just have done the command which i wrote. First i mounted it on my linux ext3 parition. Then I opened konqueror to have a look on extracted files but when I submited location "/" nothing was there. I thought that is some KDE bug or something like there, so i rebooted linux. When the grub was starting, I get error 1.5 . Btw Im running debian etch.
I have tried GParted live CD. It said to me that it has got Unknown Filesystem and unknown Used and Unused size. PowerQuest partition magic live cd did the same. All the night i was running gpart but it didn't solve anything. I know that my data are still ok, because i have tried testdisk photorec and it gave me what hdd content's, so there must be just some problem with parition tables or something like there. Any ideas? Btw: Now i'm running by kubuntu live CD and sorry of my English ;-)

Lets' try a few guesses:
- You mounted to a device node, not a mount point - I'm mildly surprised it allowed you to do that actually.
- Then you extracted the files; overwriting the start of the filesystem.
- / was mounted on /dev/sda2.
- some (most ???) of your data was untouched; but probably not all. But the f/s metadata is gone.

Photorec is probably as good an option as any, or start searching LQ for forensic.

"GRUB error 1.5" isn't really an error message: it's the stage GRUB errors out. It should be followed by a number (for expl see http://www.gnu.org/software/grub/man...#Stage2-errors) but if testdisk (not protorec) shows you your partitions in right order and size, by all means go with that.

somehow the partition table must have gotten screwed up. Otherwise gparted would not have reported unknown partition.

What is the output of fdisk -l ?

finally I fixed the partition table by testdisk. I'm really happy that my data are now in safe. Thank you for help ;-)

Cool. Now go make some backups :-]