My problem was that a crash had corrupted the super block.
I knew about fsck -b # to select an alternate super block.
But upon a manual reboot I would still get an error of bad
super block. My question was how to repair the original
super block.
There were two schools of thought.
1) fsck -b # and a reboot will fix the super block.
I and a number of other people never got this to work.
2) the method that people had been taught in classes:
fsck -b # to check the filesystem:
dump / newfs /restore the filesystem.
the second method is what worked for me.
BTW: I knew that 32 was always an alternate super block but
wandered what I would do if it was also corrupted.
newfs -N filesystem will act as if it is creating the
filesystem without writing anything to the disk. Thus
you can find out what the other alternate superblocks
are.
this happended on a solbourne with scsi disks. During a
conversation with a solbourne rep ( trying to isolate the
cause of the original crash) I was informed not to use partition
a of any scsi drive but sd0. I was told to make the a partition
1 cylinder in size and not use it as a real filesystem. There is
a bug that upon a hard reset will often corrupt the a partition of
the scsi drives other than sd0.
thanks for the help:
Malcolm Strickland chuck-strickland@orl.mmc.com
Phone: 407-356-5909
Martin Marietta Electronic Systems Fax: 407-356-5651
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