SOS - no more filesystems

[olli2003]

hi members
i've a strange problem. i think i've rebooted the sun machine (rel. 10) with some defect mirrored disks - exactly i don't know. now i've just the system prompt without any filesystems.
however... during the boot it said that i something with (1M) and that i should do a fsck on (1M) ??? what is it? there is no root fs no commands... i don't know. but
1)how can i analyze now what's the bootdisk this moment? and 2)why, if the one disk was demaged at all, the sytem wasn't reboot from the good disk at all? i've typed #fsck -y but it didn't set the fix for the superblock on 'YES' ... it said 'NO'
3)why?
4)in which way i will be able to change the bootdisk?
4)and how i will ba able to repair the fs again?
thanks for all your help!!!
kind regards, oliver

 

[kHz]

Boot from cd and run an fsck on all your filesystems if you don't know which one.

 

[Annihilannic]

Usually the mirrored boot disk will be defined in the EEPROM with a different name, so for example the default boot device will be called 'root' and the backup will be called 'rootmirror', or something like that.

Boot up to the PROM (use Stop-A if required to prevent it from booting the OS), do a printenv nvramrc to see what devaliases are defined, and then attempt to boot off the mirror device, if you can figure out which one that is.

Annihilannic.