Corrupted Filesystem * IDEAS *

[Rick Stout]

In article <3295 at auspex.auspex.com> guy at auspex.auspex.com (Guy Harris) writes:
>>I've yet to see a disk drive without a second superblock at 16 (/etc/fsck -b16)
>
>I've seen plenty of them.
>
>Some of them were running the BSD file system; they had it at 32, not 16.
>

Whats the purpose of a second superblock?
If the first one is corrupted can you boot off the second?

-Rick