[ale] missing superblock after upgrade

[Michael D. Hirsch]

On Friday 24 September 2004 10:35 am, Matt Smith wrote:
> You can use mke2fs with the -n option on the physical device and it will
> show you where it would have put the alternate superblocks (without
> touching the drive).

Oh.  Even better.  I'll try that.

Michael
> -----Original Message-----
> From: Michael D. Hirsch [mailto:mhirsch at nubridges.com]
> Sent: Friday, September 24, 2004 10:28 AM
> To: Atlanta Linux Enthusiasts
> Subject: Re: [ale] missing superblock after upgrade
>
> On Friday 24 September 2004 09:11 am, Dow Hurst wrote:
> > Now that is weird and reminds me of my problem with the IDE drive.  I
> > think they are multiples of 4096 or 8192.  The ext2 or ext3 man pages
> > ought to tell the distance apart.
>
> Hmm.  You're right.  The e2fsck man page gives some suggestions for
> superblock
> locations.  I'll poke around some more, tomorrow.
>
> Thanks,
>
> Michael
>
> > Michael D. Hirsch wrote:
> > >I just upgraded my home computer to Mandrake 10.1.  It appeared to go
> > >
> > >well, but upon reboot it was unable to mount my /usr/local partition
> > >
> > >(/dev/hdb3). I can't imagine how that got messed up as I wouldn't
> > >expect  the upgrade to even touch that partition, much less write to
> > >it.
> > >
> > >Anyway, fsck complains that it can't find a superblock for it (it is
> > >
> > >supposed to be ext3) and that I should try another block.
> > >
> > >Is there any way to figure out where the superblocks are?  The error
> > >
> > >message suggested trying 8192, or some such, but that didn't work.
> > >Are  there some common alternate superblocks?
> > >
> > >Thanks,
> > >
> > >Michael
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