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From: keithe@sail.LABS.TEK.COM (Keith Ericson)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Cylinder mapping ?
Message-ID: <9078@sail.LABS.TEK.COM>
Date: 7 Mar 91 17:21:29 GMT
References: <1991Feb28.185800.10299@rodan.acs.syr.edu>
Reply-To: keithe@sail.LABS.TEK.COM (Keith Ericson)
Distribution: usa
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 30

In article <1991Feb28.185800.10299@rodan.acs.syr.edu> schoi@rodan.acs.syr.edu (S. Choi) writes:
>
>  I have a RLL hard drive which has more than 1024 cylinders. I've heard
>  that there is a controller that uses special mapping so that I can 
>  map more heads and less cylinders.

It's called "sector translation."

>  Could anybody tell me which controller can do this mapping ?

The Adaptec 2372A or B (or C, now?) does it just fine.

>  Apparently my controller (OEM version of WD1006-SR2) cannot do
>  this mapping function.

Right.

>  If I mapped those extra cylinders to ghost heads, then will SpinRite or 
>  Norton Disk Doctor run flawlessly ?

Dunno' anout SpinRite, but NDD is unaware of anything "strange" with the
drive and works just fine.

>   Thanks.

Your welcome...

>   Seokrim Choi      schoi@rodan.acs.syr.edu   -or-  dosa@cat.syr.edu

null *keithe()