Date: Thu, 29 Jun 2006 09:59:34 -0400 (EDT) From: Jerry McAllister <jerrymc@clunix.cl.msu.edu> To: sigma_zk@yahoo.com (Sean M.) Cc: freebsd-questions@freebsd.org Subject: Re: HDD Geometry Issues Message-ID: <200606291359.k5TDxYQK021318@clunix.cl.msu.edu> In-Reply-To: <20060628215934.18452.qmail@web52315.mail.yahoo.com>
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> > My HDD is an ST340810A 3.31. The BIOS gives its stats as: > > Cylinder: 19158 > Head: 16 > Precomp: 0 > Landing Zone: 19157 > Sector: 255 > > I found the official doc at > http://www.seagate.com/support/disc/specs/ata/st340810a.html although > I'm not too sure how to interpret it. > > When I go to allocate disk space during install, it says that a > geometry of 77545/16/63 is incorrect and uses instead 4865/255/63. Even > when I reset the geometry to 19158/16/255, it says that's wrong too. > > If I use the entire disk with 'A', I see: > > Offset Size(ST) End Name PType Desc Subtype > 0 63 62 --- 12 unused 0 > 63 78156162 78156224 ad0s1 8 freebsd 165 > 78156225 9135 78165359 --- 12 unused 0 Somebody who really knows about this stuff needs to write some verbiage for the handbook. What I have read and what seems to work for me is that the geometry on currently modern drives is "virtual" as far as the OS is concerned and that you should go ahead and just slice and partition the disk and build your file systems. If it works, don't worry about the geometry messages. ////jerry > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
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