Hi,

My Ubuntu 10.10 just crashed, probably due to hardware error (and in the end I was getting errors like Unknown filesystem ..... grub> .., and it went to the GRUB console before I could take any other action).

I reinstalled the same version from a USB stick. I had Ubuntu installed with the ext4 file system and I also have the same filesystem in the same hard disk on a different drive.

When I try to access my previous filesystem, I get errors:

Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda6,
   missing codepage or helper program, or other error
   In some cases useful info is found in syslog - try
   dmesg | tail  or so

I had some important files in the previous volume ; I don't know how to retrieve them.

And what are the chances that I would get the same outcome (hardware error)? Please help me!