On Sun, 4 Jun 2000, Nathan Raymond wrote:

> fsck -T ffs:"-c 2" /
> 
> which promptly core dumped.  Doing an fsck on the volume now produces 
> the following error:
> 
> /dev/rsd0a: BAD SUPER BLOCK: VALUES IN SUPER BLOCK DISAGREE WITH 
> THOSE IN FIRST ALTERNATE

Try to use the alternate superblock: "fsck_ffs -b 32".

> and fsck can't do a thing about it, apparently.  At least I haven't 
> found a way through reading the man pages to get fsck or fsck_ffs to 
> fix it.  Do I really need to reformat the partition and start over? 
> And is this a bug, or did I do something wrong?

Sounds like a bug. I could swear "fsck_ffs -c3 /" worked for me at
some time in the past (NetBSD-1.3.2?).