Date: Mon, 23 May 2011 23:09:15 +0200 From: Wilko Bulte <wkb@xs4all.nl> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: Adrian Chadd <adrian@FreeBSD.org>, src-committers@FreeBSD.org, svn-src-all@FreeBSD.org, Marcel Moolenaar <marcel@xcllnt.net>, "Andrey V. Elsukov" <ae@FreeBSD.org>, Stefan Farfeleder <stefanf@FreeBSD.org>, svn-src-head@FreeBSD.org, Warner Losh <imp@bsdimp.com> Subject: Re: svn commit: r221972 - head/sys/geom/part Message-ID: <20110523210915.GA3024@freebie.xs4all.nl> In-Reply-To: <11294.1306133790@critter.freebsd.dk> References: <4DD9F0A3.701@FreeBSD.org> <11294.1306133790@critter.freebsd.dk>
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Quoting Poul-Henning Kamp, who wrote on Mon, May 23, 2011 at 06:56:30AM +0000 .. > In message <4DD9F0A3.701@FreeBSD.org>, "Andrey V. Elsukov" writes: > > >There is another opinion: > >http://www.boot-us.com/gloss02.htm > > > >"There is the convention that partitions should always start and end on *= > >cylinder boundaries*." > > It is actually more weird than that: > > The rule is that the starting or ending head of one of the four > slices represent the number of heads used to access the drive, and > ditto for sectors. > > This "requirement" dates back to "smart" BIOS'es and ST-506 drives > which couldn't ask the drive for its geometry. WD1003 anyone? Wilko
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