[comp.os.os2] 1024 cylinder limit in 1.2

twg0214@uxa.cso.uiuc.edu (08/07/90)

>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
> * rommel@lan.informatik.tu-muenchen.dbp.de


This is true and my Ultrastor controller does the remapping, which helps
with disks up to around 508 Mbytes. For larger disks there is no help.
Alistair Banks from Microsoft sent me a message today writing that
the 1024 cylinder limit might be removed in 2.0.

Ignacy Misztal
ignacy@uiuc.edu