From owner-freebsd-scsi  Sun Jul 28 08:45:18 1996
Return-Path: owner-freebsd-scsi
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id IAA27316
          for freebsd-scsi-outgoing; Sun, 28 Jul 1996 08:45:18 -0700 (PDT)
Received: (from grog@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id IAA27303;
          Sun, 28 Jul 1996 08:45:13 -0700 (PDT)
From: Greg Lehey <grog>
Message-Id: <199607281545.IAA27303@freefall.freebsd.org>
Subject: Re: Setting disk sector size?
To: wilko@yedi.iaf.nl (Wilko Bulte)
Date: Sun, 28 Jul 1996 08:45:13 -0700 (PDT)
Cc: scsi
In-Reply-To: <199607281150.NAA18235@yedi.iaf.nl> from "Wilko Bulte" at Jul 28, 96 01:50:17 pm
X-Mailer: ELM [version 2.4 PL24]
Content-Type: text
Sender: owner-freebsd-scsi@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

> 
> As Greg Lehey wrote...
> > 
> > A friend of mine just turned up with a Tandem disk drive (looks for
> > all the world like an IBM :-) which has 514 byte sectors.  He also has
> > another one with 516 byte sectors.  By all accounts we can change that
> > to 512 with 'scsi -m 3 -p 3 -e', except that the driver gets all
> > uptight about the 514 byte sectors and doesn't get as far as reading
> > the mode page.  scsiformat can report the format, so there must be
> > some way to do read the information, and I suspect there's also a way
> > to set it.  Does anybody have any ideas?
> 
> I had the same experience. I went to a DEC Unix box with my 518 byte
> Micropolis and changed it there. A subsequent SCSI format did the rest

Yes, we have this option too (with a Tandem box, of course), and if
things get too hard I'll do just that.  But I didn't want to give up
without a fight :-)

Greg