Date: Fri, 16 Jun 1995 13:38:57 +1000 From: Bruce Evans <bde@zeta.org.au> To: rashid@haven.ios.com, rgrimes@gndrsh.aac.dev.com Cc: hackers@freebsd.org Subject: Re: HD Geometry dirty trick Message-ID: <199506160338.NAA05064@godzilla.zeta.org.au>
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>> I've found that using "basic" geometry of 1023/64/32 >> for SCSI HD with 1Gb capacity and just adjusting the first >> value for other capacities , one can get painless install . >> Foe example , if you install 4Gb HDD - we multiply 1023 by 4 >> and use 4092/64/32 Geometry. >> For 300Mb SCSI disk we use (Int(1023/3.3))/64/32 and so on. >Fine for Adaptec controllers, not so fine for NCR controllers that >like to tranlate >1G drives to xxxx/62/34, yes that is right 62/34! I.e., 64/32 geometry works if it was the correct (BIOS) geometry all along. Otherwise, it is unlikely to work. Bruce
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