update to 8.0-RELEASE --> partition gone

[sthaug at nethelp.no]

> If you installed "dangerously dedicated" and ended up
> with ad0s1a (note the "s1"), then you have an invalid
> partitioning and FreeBSD 8.x will not give you what
> you've been getting on FreeBSD 7.x. Most of the time
> you only need to wipe out the second sector on the
> disk to clean it up and have FreeBSD 8.x also give
> you ad0s1a.

So what's an easy recipe we can run on 7.x hosts to see whether we
would have problems with 8.x?

Steinar Haug, Nethelp consulting, sthaug at nethelp.no