New to linux, kernel panic: No init found.

Hello,
i am new to this. i have a problem...
this message has started to appear every time i startup my computer.
"red Hat nash version 3.5.22 starting
Buffer I/O error on device hdc2, logical block 0
Buffer I/O error on device hdc2, logical block 0
mkrootdev: label / not found
mount: error 2 mounting ext3
pivotroot: pivot_root(/sysroot,/sysroot/initrd) failed
umount /initrd/proc failed: 2
kernel panic: No init found. Try passing init= option to kernel."

Thank you