undoing gmirror

[Paul Dokas]

I've got a computer that was running FreeBSD 6.2 on two 250GB drives that
were configured as a gmirror pair.  However, I've switched computers and
I want to reinstall this computer with FreeBSD 7.0 beta without gmirror.
However, after reinstalling and rebooting with a kernel that contains
GEOM_MIRROR, I find that it is still finding the old gmirror labels and
can't find the real root partition.

How do I go about removing the gmirror label without dd'ing /dev/zero
over both complete drives?

Paul
-- 
Paul Dokas                                     dokas at oitsec.umn.edu
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Don Juan Matus:  "an enigma wrapped in mystery wrapped in a tortilla."