Date: Tue, 09 Mar 2010 01:02:40 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: Marcel Moolenaar <xcllnt@mac.com> Cc: Pete French <petefrench@ticketswitch.com>, freebsd-geom@freebsd.org Subject: Re: another gpt vs mbr (sanity) check Message-ID: <4B958210.70108@icyb.net.ua> In-Reply-To: <D90F9986-8BD1-46C8-995B-C79D9821B496@mac.com> References: <E1Noh4B-000JjD-5u@dilbert.ticketswitch.com> <3158041B-8E00-4A87-8172-741C0AE57131@mac.com> <4B954367.3070804@icyb.net.ua> <FB4B329E-807F-4A47-A86B-AE3BC049A6DC@mac.com> <4B9544B3.80203@icyb.net.ua> <03BFAAEC-6C59-48EF-BED9-2E68ED03E2B6@mac.com> <4B956533.2010900@icyb.net.ua> <D90F9986-8BD1-46C8-995B-C79D9821B496@mac.com>
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on 09/03/2010 00:52 Marcel Moolenaar said the following: > On Mar 8, 2010, at 12:59 PM, Andriy Gapon wrote: >> So I'll just post one link about what position Apple had (note the past tense) >> about protective MBR: >> http://developer.apple.com/mac/library/technotes/tn2006/tn2166.html#SECPROTECTIVEMBR > > The document describes theory, but does not seem to describe > reality: Right, that's why I emphasized the past tense. Thank you for the details. > Revision 1.39: download - view: text, markup, annotated - select for diffs > Mon Jun 26 00:32:54 2006 UTC (3 years, 8 months ago) by sobomax > Branches: MAIN > Diff to: previous 1.38: preferred, colored > Changes since revision 1.38: +24 -5 lines > Improve check for protective MBR. Instead of assiming that protective > MBR should have only one entry of type 0xEE, consider protective MBR > to be one, that has at least one entry of type 0xEE covering the whole > unit. This makes GEOM_GPT compatible with disks partitioned by the > Apple's BootCamp. > > Approved in principle by: marcel > MFC After: 1 month > > > In short, Apple bootcamp creates an invalid PMBR according to their > own technote. > > FYI, It's not only the technote, it's the GPT spec itself. -- Andriy Gapon
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