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Date:      Tue, 18 Sep 2001 12:22:25 -0400 (EDT)
From:      Aram Khalili <aram@cs.umd.edu>
To:        Ian Dowse <iedowse@maths.tcd.ie>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: corrupted superblock/fsck problem 
Message-ID:  <Pine.SOL.4.21.0109181213220.10298-100000@toblerone.cs.umd.edu>
In-Reply-To: <200109180035.aa44033@salmon.maths.tcd.ie>

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On Tue, 18 Sep 2001, Ian Dowse wrote:

> The master superblock is at block 16; the one at block 32 is indeed

Yikes, I had assumed it starts at block 0.  So what did I clobber?  The
boot block?  The /home filesystem isn't bootable ...

> Very little information of importance changes in the master
> superblock, so there is no need to update the backup copies. Any
> summary information can be re-computed by fsck, and most fields
> are filesystem parameters that don't change. About the only things
> you might want updated in the backup superblocks are the various
> settings that can be changed with 'tunefs', and it has the -A option
> for that.

It doesn't include the count of used/free inodes and blocks in the
filesystem (not the bitmap, just the count)?  I'm more familiar with ext2,
and I think it does.

-aram


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