is@jocelyn.rhein.de (Ignatios Souvatzis) writes:
>Actually, as each of them is at the start of a cylinder group,

Actually they are not at the start of a cylinder group.  This was done
so that you could get a super block backups after a head crash.
>you can 
>resurrect at least part of your data even if the original superblock and
>all but one of the cylinder groups are damaged.

I've found that to not work too well in practice.

-- 
Christoph Badura					www.netbsd.org

	Anything that can be done in O(N) can be done in O(N^2).
	-- Ralf Schuettau (after looking at a particular piece of code)