amd64/141060: [install] Can't install 8.0-RELEASE on the server where 7.2 works fine [regression]

[mp]

The following reply was made to PR amd64/141060; it has been noted by GNATS.

From: "mp" <mp at grymmjack.com>
To: <bug-followup at FreeBSD.org>
Cc:  
Subject: Re: amd64/141060: [install] Can't install 8.0-RELEASE on the server where 7.2 works fine [regression]
Date: Fri, 8 Jan 2010 00:32:47 -0500

 If 7.2 was installed on a "dangerously dedicated" drive, then the 8.0
 sysinstall bsdlabel does not automatically recreate a standard MBR on the
 disk.  You can try to fix this by starting a fixit shell from sysinstall and
 issuing the command:
   dd if=/dev/zero of=/dev/ad1 bs=512 count=1025
 where ad1 is the dangerously dedicated device.
 
 This corrected the issue for me.  Also, you can read more about this from
 the mailing list archives:
 http://lists.freebsd.org/pipermail/freebsd-questions/2009-December/208759.ht
 ml
 
 Thank You,
 Mike Duchene