Date: Sun, 2 Jul 1995 15:33:37 +1000 From: Bruce Evans <bde@zeta.org.au> To: freebsd-hackers@freefall.cdrom.com, jcargill@cs.wisc.edu Subject: Re: forwarded message from Ron Feigen Message-ID: <199507020533.PAA01236@godzilla.zeta.org.au>
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>I got the following email from someone running FreeBSD-2.0; can >someone fill Ron and I in on how using an IDE disk in LBA mode >interacts with mounting it under FreeBSD-2.0? >... >If there is a way I could keep my DOS/Win drive in LBA mode >and still mount it with FreeBSD that would be great. I >would love to have LBA on the FreeBSD disk but I am sure that is >not possible Under FreeBSD-2.0, the BIOS geometry must have <= 16 heads. This is normally not the case if LBA mode is used so you can't use LBA mode under FreeBSD-2.0. Don't use FreeBSD-2.0. Under FreeBSD-2.0.5., there is no restriction on the BIOS geometry. FreeBSD-2.0.5 neither knows nor needs to know about LBA mode. It needs the drive to report a default geometry with <= 16 heads. The default geometry is the one printed in the boot messages. At least some drives that use LBA mode and > 16 heads under the BIOS report a suitable default geometry with <= 16 heads so that they work under FreeBSD. Bruce
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