From owner-freebsd-stable@FreeBSD.ORG Tue Dec 15 23:21:32 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0FD7B1065693 for ; Tue, 15 Dec 2009 23:21:32 +0000 (UTC) (envelope-from xcllnt@mac.com) Received: from asmtpout023.mac.com (asmtpout023.mac.com [17.148.16.98]) by mx1.freebsd.org (Postfix) with ESMTP id F039C8FC08 for ; Tue, 15 Dec 2009 23:21:31 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii Received: from macbook-pro.jnpr.net (natint3.juniper.net [66.129.224.36]) by asmtp023.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KUP00EYOVJDHT40@asmtp023.mac.com> for freebsd-stable@freebsd.org; Tue, 15 Dec 2009 15:21:17 -0800 (PST) From: Marcel Moolenaar In-reply-to: <200912151720.37709.freebsd@insightbb.com> Date: Tue, 15 Dec 2009 15:21:13 -0800 Message-id: <4678E8AE-B873-460A-B126-420B9A06B875@mac.com> References: <4B2802AE.9090107@kernel32.de> <200912151720.37709.freebsd@insightbb.com> To: Steven Friedrich X-Mailer: Apple Mail (2.1077) Cc: freebsd-stable@freebsd.org, Marian Hettwer Subject: Re: update to 8.0-RELEASE --> partition gone X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Dec 2009 23:21:32 -0000 On Dec 15, 2009, at 2:20 PM, Steven Friedrich wrote: >> > FreeBSD 8.0 no longer supports "dangerously dedicated" disks. This is not true. The problem is that sysinstall creates an invalid "dangerously dedicated" disk, as demonstrated by doing: # fdisk ad8 (shows FreeBSD slice information) # bsdlabel ad8 (shows valid but empty disk label) Marian just needs to wipe out the second sector on the disk to remove the BSD disklabel that prevents the kernel from using the master boot record in the 1st sector. This exposes ad8s1. This then will pick up the BSD disklabel in sector 65 (i.e. the second sector in slice 1) to give ad8s1a... > fdisk output appears to indicate that your disk has a partition table, but I > never looked at one with fdisk that was "dedicated"... fdisk may or may not show partitions. Typically there should not be any, because it's the disklabel in sector 2 that holds the partition information. The "MBR" in the first sector is there only for the BIOS: you can't boot without one. -- Marcel Moolenaar xcllnt@mac.com