Subject: Re: Disks with 128 or 256 bytes per sector
To: Manuel Bouyer <email@example.com>
From: Ignatios Souvatzis <firstname.lastname@example.org>
Date: 05/29/2001 21:44:42
On Tue, May 29, 2001 at 07:13:50PM +0200, Manuel Bouyer wrote:
> On Tue, May 29, 2001 at 01:52:35PM +0200, Jochen Kunz wrote:
> > Hi.
> > I am currently in the beginning of writing a device driver for the
> > DEC RX01 / RX02 floppy disk system. These drives use 128 or 256 bytes
> > per sctor. How does NetBSD deal with this? Is there a system to use non
> > 512 byte per sector disks, or should my driver do a transparent sector
> > mapping to 512 byte sectors. (Like the firmware of SCSI CDROM drives in
> > 512 byte per sector mode.) A first look at disk(9) did not gave me
> > a hint.
> As far as I know, We're limited to 512 bytes/sector for now.
> Solutions have been provided in kern/3790, 3791 and 3792; but unfortunably
> nobody looked at this until now :(
Thats not totally true; the UBC Chuck has had some preliminary code, I think,
for this, too.