From owner-freebsd-hardware Sat Mar 30 20:15:48 2002 Delivered-To: freebsd-hardware@freebsd.org Received: from posgate.acis.com.au (posgate.acis.com.au [203.14.230.14]) by hub.freebsd.org (Postfix) with ESMTP id D2B2637B41A for ; Sat, 30 Mar 2002 20:15:40 -0800 (PST) Received: from bullseye.apana.org.au (dialup-1.aaa.net.au [203.14.230.66]) by posgate.acis.com.au (8.11.6/8.11.6) with ESMTP id g2V4FYO31222; Sun, 31 Mar 2002 14:15:35 +1000 Received: from bullseye.apana.org.au (tenring.andymac.org [203.9.107.238]) by bullseye.apana.org.au (8.11.6/8.11.6) with ESMTP id g2V0FmV24698; Sun, 31 Mar 2002 10:15:48 +1000 (EST) (envelope-from andymac@bullseye.apana.org.au) Date: Sun, 31 Mar 2002 10:08:10 +1000 (est) From: Andrew MacIntyre To: Willie Viljoen Cc: Subject: Re: Instability with offboard IDE controller, CMD-649 In-Reply-To: <20020329221758.U508-100000@phoenix.vh.laserfence.net> Message-ID: X-X-Sender: andymac@bullseye.apana.org.au MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, 29 Mar 2002, Willie Viljoen wrote: > I'd previously posted to freebsd-fs list about this problem, I keep > loosing data and having stability problems with a CMD-649 PCI ATA-100 > offboard IDE controller. I'm using several of these; one of which is used to boot 4.4R on an old pre-UDMA chipset board. They're not getting heavy use though... {...} > I'm down to one last option, being trying to run the drives at low speed > with old 40-conducter cables, just to try and force this controller to > slow down. man ata(4) shows a sysctl which could be used to force PIO mode for testing. 40 wire cables should force the controller back to UDMA-33. > It claims to be ATA-100, but when booted in windows, the driver is trying > to run it in what it calls "UDMA mode 5", which to my best knowledge is > ATA-133, which neither the drive (a 40GB Seagate ST340810A 5400RPM) or the > controller supports. UDMA mode 5 is ATA-100. If going slower helps, keep in mind that >UDMA-33 is sensitive to cable length as well as cable/connector quality, so if you haven't already tried changing 80 wire cables it might be worthwhile. -- Andrew I MacIntyre "These thoughts are mine alone..." E-mail: andymac@bullseye.apana.org.au | Snail: PO Box 370 andymac@pcug.org.au | Belconnen ACT 2616 Web: http://www.andymac.org/ | Australia To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message