You can also check the disk with manufacturers tools for physical defect/damage. Back up your data first! Some of the tests are destructive. But they generally warn you first.

On Feb 17, 2012 10:17 AM, "kitepilot@kitepilot.com" <kitepilot@kitepilot.com> wrote:
Another (NON destructive) check you may to do:
as root:
dd if=/dev/{your partition} of=/dev/null
Your HD will (most likely) be OK if it finishes without other error than "read beyond EOF" (or something like that)
ET


Michael Havens writes:
Yep.... I think I had a hard disk failure. I restarted my computer and was
presented with:
    error: unknown filesystem.
    grub rescue>
I then typed 'ls' and the response was
    (hd0) (hd0,msdos5) (hd0,msdos3) (hd0,msdos1) (fd0)
which is two partitions, the swap drive, and the floppy disk
how do I verify my suspicion of drive failure?
funny how all this happened just as I was attempting to back it up.
--
:-)~MIKE~(-:
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