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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: <3780@tuminfo1.lan.informatik.tu-muenchen.dbp.de>
Date: 5 Aug 90 08:04:25 GMT
References: <135200001@uxa.cso.uiuc.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
Lines: 23

In article <135200001@uxa.cso.uiuc.edu> twg0214@uxa.cso.uiuc.edu writes:
>
>attempted to create the HPFS partition. Then I read carefully a manual 
>of my ESDI controller. It said that OS/2 can't recognize disks with more 
>than 1024 cylinders which limits the size of the disk to about 508 Mbytes.
>
>Ignacy Misztal
>ignacy@uiuc.edu

Most ESDI controllers provide some way of "remapping" of the disk
cylinders to less than 1024 by increasing the number of sectors per
track logically (inside the drive) to 63. This is transparent to the
operating system and works with OS/2 too. I installed an NEC disk with
1224 cylinders and a NCL controller successfully using the remapping
feature.

Kai Uwe Rommel

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