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From: klee@imagen.com (Kanghoon Lee)
Subject: Re: Help! I cannot use os-bs on 1.7 Gig drive.
Message-ID: <klee.760995005@imagen>
Keywords: 1.7 Gig drive
Sender: usenet@aqm.com
Nntp-Posting-Host: imagen
Organization: imagen
References: <klee.760727150@imagen> <prang.760973711@du9ds4>
Date: 11 Feb 94 19:30:05 GMT
Lines: 38
prang@du9ds4.fb9dv.uni-duisburg.de (Juergen Prang) writes:
>klee@imagen.com (Kanghoon Lee) writes:
>I guess, the problem is that OS-BS uses BIOS's Int13h to access the disk containing
>the bootcode. For this reason its disk access capabilities are limited to a maximum
>of 1024 cylinders / 16 heads / 63 sectors per track. So your partition boundary has
>all its parameters to lie under these maxima. Once NetBSD is booted it is independent
>of these restrictions.
>In case your disk geometry has more than 63 sectors per track or more than 16 heads
>it may or may not be possible to let OS-BS boot NetBSD on a cylinder below 1024.
>Juergen
>--
> Juergen Prang | prang@du9ds4.fb9dv.uni-duisburg.de
> University of Duisburg |********************************************
> Electrical Engineering | Logic is a systematic method of coming
> Dept. of Dataprocessing | to the wrong conclusion with confidence
I think you are right. My disk has 3152 cylinders, 16 heads, 63 sectors per
track. When I use the pfdisk to list the geometry, it lists 1024 cylinders,
and I cannot change that. When I install the NetBSD, with partition starting
after the boundary, it does not boot at all. For now, I will settle with
the floppy DOS boot disk. Thanks for all the help.
Kang.
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