Date: Sun, 24 Sep 2000 19:02:30 +0200 From: Andre Albsmeier <andre@akademie3000.de> To: Jim Weeks <jim@siteplus.net> Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Disable write caching Message-ID: <20000924190230.A8029@schlappy.mobile.tld> In-Reply-To: <Pine.BSF.4.21.0009180945270.1253-100000@veager.siteplus.net>; from jim@siteplus.net on Mon, Sep 18, 2000 at 09:51:34AM -0400 References: <Pine.BSF.4.21.0009180945270.1253-100000@veager.siteplus.net>
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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
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