Kernel panic, SB validate failed

[Gaspar Bakos <gbakos@xxxxxxxxxxxxxxx>]

Hi,

Yesterday my Linux box (RH9.0, 2.4.22, XFS-1.3 or 1.3.1?) crashed
(complete freeze while I was working on text editing under X). After some
futile attempts to umount or reboot, I had to hard-reset. At boot I got to
the following point:

FAT: bogus cluster size 51
-"-
XFS: bad magic number
XFS: SB validate failed
Kernel panic: VFS: Unable to mount root fs on 03:05

Any advice would be VERY welcome, how to proceed in such a case.
First I would somehow like to distinguish between drive or XFS failure.

Cheers
Gaspar