Date: Thu, 15 Jan 2009 20:46:23 +0100 From: Dimitry Andric <dimitry@andric.com> To: Marcel Moolenaar <xcllnt@mac.com> Cc: Randy Bush <randy@psg.com>, Luiz Otavio O Souza <lists.br@gmail.com>, George Neville-Neil <gnn@neville-neil.com>, Ben Kaduk <minimarmot@gmail.com>, current@freebsd.org Subject: Re: GEOM and moving to CURRENT from 7.1 Message-ID: <496F928F.6010807@andric.com> In-Reply-To: <BC6ACB2A-CBC5-428B-8749-999B48B2D1C8@mac.com> References: <FC3D3CF7-091B-4ECF-BE38-6C7751C20994@neville-neil.com> <alpine.BSF.2.00.0901112002080.3696@ibyngvyr.purzvxnyf.bet> <496D0364.2060505@psg.com> <47d0403c0901131335h46e7b151p3768de9a3e2c2027@mail.gmail.com> <EC370904A7B74B93887C79E120CA2835@adnote989> <085BEE07-BAE5-4A45-A14D-9587987FAA5C@mac.com> <496F44FA.1070004@andric.com> <48C1C477-B7BE-43B0-AC57-9DEB7BF9AA88@mac.com> <496F7347.4060007@andric.com> <A8E47805-888E-4282-8623-72A65B593D47@mac.com> <496F8D8A.1060508@andric.com> <BC6ACB2A-CBC5-428B-8749-999B48B2D1C8@mac.com>
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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. And at least VMware's BIOS isn't scared of empty partition tables. ;)
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