HD error: BAD SUPER BLOCK
jerrymc at clunix.cl.msu.edu
Mon Nov 24 13:27:50 PST 2003
> > > If the drive worked in the 4.7 machine, what was the fstab entry there?
> > >
> > I cant recall the fstab entry but the drive was as Master on the
> > secondary IDE channel and had only one partition using all diskspace.
> > In the 4.9 machine the drive is on a DMA-66-Controller. Under Win2000
> > this is listet as a SCSI-Device. I don't know whether this can be the
> > problem - I will try to put it again on the IDE-Channel.
> > > What is the output of 'disklabel ad6'?
> > >
> > # /dev/ad6:
> > type: unknown
> > disk: amnesiac
> > label: fictitious
> OK, I admit I don't know what is going on here. Someone with more
> experience is needed.
> Just for comparision, here is the beginning of 'disklabel ad0' of one
> of my FreeBSD machines:
> type: ESDI
> disk: ad0s1
> Note the difference: type='ESDI' vs 'unknown', disk='ad0s1' vs
> 'amnesiac'. This must indicate something, but I have no idea what...
> > 8 partitions:
> > # size offset fstype [fsize bsize bps/cpg]
> > c: 160086528 0 unused 0 0 # (Cyl. 0 - 9964*)
> > /kernel: ad6: cannot find label (no disk label)
> > /kernel: ad6s1: cannot find label (no disk label)
> ... except that your system doesn't see a meaningful disklabel in the
> only slice on this disk, as it says above.
> Toomas Aas | toomas.aas at raad.tartu.ee | http://www.raad.tartu.ee/~toomas/
> * If you cannot change your mind, are you sure you have one?
NOTE: If you run disklabel and do not use the "-r" switch, then
what you are seeing is the socalled 'in-cure' version of the disklabel
and if no FreeBSD label has been written on the disk, the system will
make up some default stuff. So, just seing # /dev/ad6
and type: , etc plus the line for c: followed by those messages
saying cannot find label is a strong indication that nothing is there.
Has fdisk and disklabel (with a write switch) ever been done on this disk?
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