[Sunhelp] Disk Failure

[Fuerst, Robert C. (Chris)]

Won't boot because of a bad block on /dev/dsk/c0t3d0s0.
I tried multiple fsck's and I get the same thing.
I can get into format but can't try to fix anything because there are
mounted partitions.
I can umount because the system is read only.
I do have a c0t1d0 - but no OS there to boot to.
What are my options?  Is there a way to delete or modify the vfstab somehow
offline?  Maybe some stop-a options.

Thanks,
1st