From owner-freebsd-scsi Fri Aug 22 04:48:33 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id EAA03869 for freebsd-scsi-outgoing; Fri, 22 Aug 1997 04:48:33 -0700 (PDT) Received: from hda.hda.com (hda-bicnet.bicnet.net [208.220.66.37]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id EAA03862 for ; Fri, 22 Aug 1997 04:48:25 -0700 (PDT) Received: (from dufault@localhost) by hda.hda.com (8.8.5/8.8.5) id HAA16253 for scsi@freebsd.org; Fri, 22 Aug 1997 07:01:52 -0400 (EDT) From: Peter Dufault Message-Id: <199708221101.HAA16253@hda.hda.com> Subject: Re: Formatting DISK 256 bytes/sec => 512b/sec In-Reply-To: <19970822170457.50741@lemis.com> from Greg Lehey at "Aug 22, 97 05:04:57 pm" To: scsi@freebsd.org Date: Fri, 22 Aug 1997 07:01:52 -0400 (EDT) X-Mailer: ELM [version 2.4ME+ PL25 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > I've done this before, with Tandem drives which were originally > formatted with 516 bytes/sector. I think I edited mode page 3. If > you have any trouble with this method, let me know and I'll try to > drag out the info I had at the time. Yes, page 3 is the format device page. I think you should edit page 3 and then format. There is a way to specify the range of block numbers in the mode select header which isn't supported by the scsi(8) mode page editor. Maybe some drives will have trouble formatting to new sector sizes without adding a flag to specify block ranges. Peter -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Safety critical systems, Agency approval