Date: Thu, 2 Dec 2010 11:30:35 +0000 From: Bruce Cran <bruce@cran.org.uk> To: perryh@pluto.rain.com Cc: bu7cher@yandex.ru, xcllnt@mac.com, freebsd-geom@freebsd.org Subject: Re: G_PART macro definitions Message-ID: <20101202113035.00005e38@unknown> In-Reply-To: <4cf77e11.P9UAmLzg7xenh4WP%perryh@pluto.rain.com> References: <4cf21cd3.UbQ57eYkszW60Ww4%perryh@pluto.rain.com> <4CF34297.4070300@yandex.ru> <4cf35138.VleaJCYj4z5kd9WX%perryh@pluto.rain.com> <4CF35809.6050704@yandex.ru> <4cf367ff.58BO71PlaI7w0e4r%perryh@pluto.rain.com> <F628AC1A-8C38-430F-BA43-7DABB76721DC@mac.com> <4cf4d374.ej1zPKXBMjtfSPzw%perryh@pluto.rain.com> <4CF4EDC2.4030907@yandex.ru> <4cf6148d./XPrjnaBP5xeKIEf%perryh@pluto.rain.com> <4CF62851.2080502@yandex.ru> <4cf77e11.P9UAmLzg7xenh4WP%perryh@pluto.rain.com>
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On Thu, 02 Dec 2010 03:08:01 -0800 perryh@pluto.rain.com wrote: > I'm not sure where I first got the impression that not all BIOS > can handle GPT, but the most recent apparent confirmation was here: > http://lists.freebsd.org/pipermail/freebsd-questions/2010-September/221669.html I was also under the impression that 'legacy' BIOSes couldn't boot from GPT, while EFI requires it. The part I'd missed was that FreeBSD installs a Protective MBR which means that the BIOS doesn't need to know anything about GPT to boot it (http://en.wikipedia.org/wiki/GUID_Partition_Table#Legacy_MBR_.28LBA_0.29). -- Bruce Cran
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