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From: romkey@asylum.SF.CA.US (John Romkey)
Newsgroups: comp.unix.xenix.sco
Subject: Re: Hard disks with > 1024 Cylindars
Message-ID: <12706@asylum.SF.CA.US>
Date: 1 Sep 90 18:53:35 GMT
References: <1990Aug31.022148.5775@gpu.utcs.utoronto.ca> <1535@chinacat.Unicom.COM>
Reply-To: romkey@asylum.UUCP (John Romkey)
Organization: The Asylum; Belmont, CA
Lines: 15

In article <1535@chinacat.Unicom.COM> chip@chinacat.Unicom.COM (Chip Rosenthal) writes:
>Some ESDI controllers, such as the WD1007, do remapping, and present a
>different disk geometry to the system.  Thus, as far as the system is
>concerned the disk *is* less than 1024 cylinders.

I got bitten by a remapping problem with the WD1007 once. It can remap
up to a maximum of 1024 cylinders, 64 sectors per track and 16 heads.
That multiplies out to a maximum of 512MB, which is sad when you're
using a 660MB disk like I was. Then I discovered that Xenix could deal
with the controller without mapping and still access the entire disk,
and became very, very happy.
-- 
			- john romkey
USENET/UUCP: romkey@asylum.sf.ca.us	Internet: romkey@ftp.com
King Kong died for your sins.