From owner-freebsd-isp Sun Sep 24 10:36:31 2000 Delivered-To: freebsd-isp@freebsd.org Received: from akademie3000.de (akademie3000.de [194.121.70.49]) by hub.freebsd.org (Postfix) with ESMTP id 4554137B422 for ; Sun, 24 Sep 2000 10:35:54 -0700 (PDT) Received: from schlappy.mobile.tld ([12.128.181.239]) by akademie3000.de (8.9.2/8.9.2) with ESMTP id TAA04602; Sun, 24 Sep 2000 19:35:47 +0200 (CEST) Received: (from andre@localhost) by schlappy.mobile.tld (8.11.0/8.11.0) id e8OH2U408206; Sun, 24 Sep 2000 19:02:30 +0200 (CEST) (envelope-from andre) Date: Sun, 24 Sep 2000 19:02:30 +0200 From: Andre Albsmeier To: Jim Weeks Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Disable write caching Message-ID: <20000924190230.A8029@schlappy.mobile.tld> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from jim@siteplus.net on Mon, Sep 18, 2000 at 09:51:34AM -0400 X-Echelon: BND CIA NSA Mossad KGB MI6 IRA detonator nuclear assault strike Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Mon, 18-Sep-2000 at 09:51:34 -0400, Jim Weeks wrote: > I have a Seagate Barracuda drive that is giving me a fit. There has been > some discussion on this list about disabling the write cache on these > drives. I remember that someone posted the procedure, but can't find it > in the archives. > > If anyone has that information I would appreciate a response. I am currently in the Dominican Republic with my laptop that doesn't have SCSI so I have to remember it from head... You have to edit a modepage to do this. It can be done with camcontrol modepage da0 -m 8 -P 3 -e For da0 you use your drive and for 8 the modepage number. Then you will get your editor launched and see an entry like: WCE: 1 This means that write caching is enabled. Change it to 0 and quit. You can launch the camcontrol again to see if the drive remebered the new setting. I think 8 is the correct number... If you have an Adaptec Controller with the latest BIOS (2.57.2) you can also set the WCE flag there in the SCSI select utility... -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message