maybe it's a driver issue, which server is that?
which raid controller?
you can try SystemRescueCd Linux distribution.
Im booted my serer with debian rescue cd.
I need to mount "/dev/sda2", But its raid1 with "/dev/sdb2" and used LVM system.
How can mount this partition now?
I need to access to /dev/VolGroup00/LogVol02
Help me please ...