My WS boot disk has failed so when i want to boot system (by OK boot -s or Ok boot disk0 ) i get these mesgs:

disk read error
boot :can not find misc/sparc9v/krtld
boot:error loading interperetor (misc/sparc9v/krtld)
Elf64 read error.
boot failed.


although it's probed ,finally i try to boot system via cdrom ,so i can see the hard disk with format command , i executed fsck on the related raw device, after many fixings & removings there are many blocks that it couldn't read .
i rebooted the system again to check wether the problem is solved or no ,but it's still the same & i got this mesgs also :

"Fatal scsi error at script address 10 unexpected disconnect."

i think i have no solution except replacing the hard disk ,what do you think ?

Rgrds
nikk