Date: Wed, 11 Nov 2009 17:00:17 -0800 From: Marcel Moolenaar <xcllnt@mac.com> To: =?iso-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no> Cc: current@freebsd.org Subject: Re: How to confuse geom_part_mbr Message-ID: <94D5F246-3413-4256-A0FB-6DF2D3BFE9D0@mac.com> In-Reply-To: <86tyx0mxjw.fsf@ds4.des.no> References: <86tyx0mxjw.fsf@ds4.des.no>
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On Nov 11, 2009, at 3:49 PM, Dag-Erling Sm=F8rgrav wrote: > While installing 8.0-RC2 via a netbooted 7.0-RELEASE: >=20 > # fdisk -I -B ad0 > # bsdlabel -rw ad0 auto > # bsdlabel -e ad0 > [hmm, that wasn't right!] > # fdisk -I -B ad0 > # bsdlabel -rw ad0s1 auto > # bsdlabel -e ad0s1 > # bsdlabel -B ad0s1a > # newfs -U -L root ad0s1a > # mount /dev/ufs/root /mnt > [install to /mnt] > # reboot >=20 > The machine won't boot, even though you have a valid partition table = on > ad0 that points to a valid bsdlabel in ad0s1. No, you don't have a valid partition table on ad0, because you didn't remove the BSD disklabel in sector 2 on ad0. You just overwrote sector 1 on ad0 and created a new BSD disklabel in sector 64. You still have a dangerously dedicated disk without partitions, by virtue of the BSD label in sector 2. --=20 Marcel Moolenaar xcllnt@mac.com
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