From owner-freebsd-current@FreeBSD.ORG Thu Jan 15 19:55:59 2009 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B81FB10656C1 for ; Thu, 15 Jan 2009 19:55:59 +0000 (UTC) (envelope-from xcllnt@mac.com) Received: from asmtpout014.mac.com (asmtpout014.mac.com [17.148.16.89]) by mx1.freebsd.org (Postfix) with ESMTP id 9B9148FC12 for ; Thu, 15 Jan 2009 19:55:59 +0000 (UTC) (envelope-from xcllnt@mac.com) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from 369fn31-3542.jnpr.net (natint3.juniper.net [66.129.224.36]) by asmtp014.mac.com (Sun Java(tm) System Messaging Server 6.3-7.03 (built Aug 7 2008; 32bit)) with ESMTPSA id <0KDJ00J6W3D0O400@asmtp014.mac.com> for current@freebsd.org; Thu, 15 Jan 2009 11:55:49 -0800 (PST) Message-id: From: Marcel Moolenaar To: Dimitry Andric In-reply-to: <496F928F.6010807@andric.com> Date: Thu, 15 Jan 2009 11:55:48 -0800 References: <496D0364.2060505@psg.com> <47d0403c0901131335h46e7b151p3768de9a3e2c2027@mail.gmail.com> <085BEE07-BAE5-4A45-A14D-9587987FAA5C@mac.com> <496F44FA.1070004@andric.com> <48C1C477-B7BE-43B0-AC57-9DEB7BF9AA88@mac.com> <496F7347.4060007@andric.com> <496F8D8A.1060508@andric.com> <496F928F.6010807@andric.com> X-Mailer: Apple Mail (2.930.3) Cc: Randy Bush , Luiz Otavio O Souza , George Neville-Neil , Ben Kaduk , current@freebsd.org Subject: Re: GEOM and moving to CURRENT from 7.1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Jan 2009 19:56:00 -0000 On Jan 15, 2009, at 11:46 AM, Dimitry Andric wrote: > On 2009-01-15 20:35, Marcel Moolenaar wrote: >> You need a boot sector for the BIOS to jump into, but >> it doesn't have to be a MBR with slices. That's why >> a DD has something that looks an awful lot like a MBR >> in the first sector. It could very well be boot sector >> of an FAT* file system. > > I can confirm, that wiping out the partition table (but not the boot > code), using "bsdlabel -B /dev/ad0s1", makes "s1" disappear. > Subsequent > boots can then be done from /dev/ad0a, and this works both for "old" > kernels, e.g. from before r186240 and after. Thanks *very* much for testing! It's important that we get the details right, so that we can consider adding code to help in the migration and fix whatever is broken. Much appreciated, -- Marcel Moolenaar xcllnt@mac.com