From owner-freebsd-questions@FreeBSD.ORG  Sat Nov 27 19:36:51 2004
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id D88A216A4CE
	for <freebsd-questions@freebsd.org>;
	Sat, 27 Nov 2004 19:36:51 +0000 (GMT)
Received: from gldis.ca (constans.gldis.ca [66.11.169.73])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 7655143D1F
	for <freebsd-questions@freebsd.org>;
	Sat, 27 Nov 2004 19:36:51 +0000 (GMT)
	(envelope-from gldisater@gldis.ca)
Received: from [IPv6:::1] (localhost [127.0.0.1])
	by gldis.ca (8.12.11/8.12.11) with ESMTP id iARJXkog024796;
	Sat, 27 Nov 2004 14:33:47 -0500 (EST)
	(envelope-from gldisater@gldis.ca)
Message-ID: <41A8D7D0.8020400@gldis.ca>
Date: Sat, 27 Nov 2004 14:38:56 -0500
From: Jeremy Faulkner <gldisater@gldis.ca>
User-Agent: Mozilla Thunderbird 0.9 (X11/20041123)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Erik Norgaard <norgaard@locolomo.org>
References: <41A8D1FA.8030005@locolomo.org>
In-Reply-To: <41A8D1FA.8030005@locolomo.org>
X-Enigmail-Version: 0.89.0.0
X-Enigmail-Supports: pgp-inline, pgp-mime
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: ClamAV 0.80rc4/561/Fri Oct 29 06:26:00 2004
	clamav-milter version 0.80j
	on constans.gldis.ca
X-Virus-Status: Clean
cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject: Re: Lost MBR/wrong disk geometry
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 27 Nov 2004 19:36:52 -0000

Erik Norgaard wrote:
> Hi,
> 
> It appears that I have screwed my disk (60GB) thoroughly. I had used the 
> sample install.cfg for sysinstall but it has "partition=exclusive" and 
> not "all". I did
> 
>   dd if=/dev/zero of=/dev/ad0 count=1k
> 
> as explained in the faq, and the exclusive partioning was gone.
> 
> I can run sysinstall, slice up the disk and install stuff. But on reboot 
> the system doesn't find a usefull mbr.
> 
> I can boot up a rescue disk, mount the partitions, read data stored and 
> use any programs installed. But I can't recover or create a new mbr with
> 
>   dd if=/boot/mbr of=/dev/ad0
> 
> or with /boot/boot0, or use fdisk to manually set slices and active 
> slice, run sysinstall and choose a bootmanager or similar.
> 
> Please, how to I get back an mbr and a working partition table?
> 
> Thanks!
> 
> Cheers, Erik
> 

'fdisk -B' didn't work?

-- 
Jeremy Faulkner	<gldisater@gldis.ca>
Resume:	http://www.gldis.ca/gldisater/resume.html