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From: rommel@lan.informatik.tu-muenchen.dbp.de (Kai-Uwe Rommel)
Newsgroups: comp.os.os2.misc
Subject: Re: 1024 cylinder limit in 1.2
Message-ID: <4354@tuminfo1.lan.informatik.tu-muenchen.dbp.de>
Date: 11 Sep 90 11:19:50 GMT
References: <135200001@uxa.cso.uiuc.edu> <1990Sep10.152015.29987@cec1.wustl.edu>
Sender: news@lan.informatik.tu-muenchen.dbp.de
Reply-To: rommel@lan.informatik.tu-muenchen.dbp.de (Kai-Uwe Rommel)
Organization: Inst. fuer Informatik, TU Muenchen, W. Germany
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In article <1990Sep10.152015.29987@cec1.wustl.edu> dbc0027@cec1.wustl.edu (Daniel Bryan Crank) writes:
>with a 360MB Maxtor Drive (1224 cylinders) and the existing Western Digital
>controller.  We were able to _low-level_ format the entire thing, by using
>DOS's debug program to jump into the setup program on the controller card's
>ROM... (many, many thanks to Western Digital for helping us out -- they have
>the best technical support staff in the known universe).
>
>Anyway, the low-level format succeeded, but PMFDISK reported that the maximum
>partition size was just under 300MB, and nothing would change its mind.  We
>wound up letting that extra 60-odd megabytes go in order to get the drive
>running...*sigh*.

I have set up an ESDI disk for OS/2 with 1224 cylinders and *could* use
all of the disk space. The trick was to use the controller's remapping
feature which makes the disk appearing to have 63 sectors per track and
16 heads and the resulting number of cylinders. This was a NCL
controller but I was told the WD-1007 is capable of this too.

Kai Uwe Rommel

--
/* Kai Uwe Rommel
 * Munich
 * rommel@lan.informatik.tu-muenchen.dbp.de
 */