docs/128804: Gmirror handbook instructions convert boot-drive to gmirror, truncating last sector

[trhodes at FreeBSD.org]

Synopsis: Gmirror handbook instructions convert boot-drive to gmirror, truncating last sector

Responsible-Changed-From-To: freebsd-doc->trhodes
Responsible-Changed-By: trhodes
Responsible-Changed-When: Sun Dec 21 12:22:19 UTC 2008
Responsible-Changed-Why: 
Take.

http://www.freebsd.org/cgi/query-pr.cgi?pr=128804