Date: Sat, 17 Jun 1995 06:20:49 +1000 From: Bruce Evans <bde@zeta.org.au> To: aflundi@sandia.gov, freebsd-hackers@freebsd.org Subject: Re: HD Geometry dirty trick Message-ID: <199506162020.GAA00687@godzilla.zeta.org.au>
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>> The BIOS can invent any geometry that it wants (subject to the >> constraints 1 <= nsectors <= 63, 1 <= nheads <= 256, 1 <= ncyls <= 1024). >Does this mean that it's possible that every distinct >BIOS could produce a different geometry for a given disk >drive, so that there is no way to predict via an algorithm >for all machines what the BIOS geometry should be? Bummer! Yes. It makes /etc/disktab unusable. However, it's much easier to find out the drive at runtime than to keep a huge table of disk drives. Bruce
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