Re: how to retrieve info from a bad disk?

[Gary Dale <garydale@rogers.com>]

On 21/04/12 11:22 AM, abdelkader belahcene wrote:
> hi,
> I have a disk ( I tera Bytes  it contains important data!!!)  
> formatted with nfts,
> somebody used it in wind$   a virus  seems destroy "something" in 
> partition table  ???
>
> Now no access is possible, although the partition is recognized as 
> /dev/sdb1  with correct sie, but no possibility to
> retive files.
> I tried   ntfs-3g    /dev/sdb1  t         gave   segmentaion fault
> I tried  testdisk        it   analysed the disk and gathered the 
> data,   I tried to list the files ,    it gave same error as ntfs-3g, 
> I mean  segmentation fault??
>
>
> Is there  another rescue software ??
> thanks for help
>
> regards
Firstly, copy the entire disk to another one of the same or larger size 
by booting from a live distro such as sysrecuecd and using dd (e.g. dd 
if=/dev/sda of=/dev/sdb).

Secondly, using the copy of the disk, try to rescue the disk using 
testdisk. This may reconstruct the partition table. If it doesn't work, 
you can try photorec to recover files. For photorec, recover the files 
to a third disk, not to the original or copy.