From owner-freebsd-questions Sat Jul 21 9: 0:18 2001 Delivered-To: freebsd-questions@freebsd.org Received: from clmboh1-smtp3.columbus.rr.com (clmboh1-smtp3.columbus.rr.com [65.24.0.112]) by hub.freebsd.org (Postfix) with ESMTP id 42BCB37B406 for ; Sat, 21 Jul 2001 09:00:16 -0700 (PDT) (envelope-from wmoran@iowna.com) Received: from iowna.com (dhcp065-024-023-038.columbus.rr.com [65.24.23.38]) by clmboh1-smtp3.columbus.rr.com (8.11.2/8.11.2) with ESMTP id f6LFuhO16633; Sat, 21 Jul 2001 11:56:43 -0400 (EDT) Message-ID: <3B59A707.F4D60AD0@iowna.com> Date: Sat, 21 Jul 2001 12:00:07 -0400 From: Bill Moran X-Mailer: Mozilla 4.76 [en] (X11; U; FreeBSD 4.3-STABLE i386) X-Accept-Language: en MIME-Version: 1.0 To: User & Ian Patrick Thomas Cc: freebsd-questions@freebsd.org Subject: Re: How to change UDMA mode on ata drives References: <3B5987B1.C5310BB0@iowna.com> <20010721114445.C5115@localhost> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG User & Ian Patrick Thomas wrote: > > As it was put forth by Bill Moran on Sat, Jul 21, 2001 at 09:46:25AM -0400... > > I've got an ata100 drive that's buggy under ata100. I want to throttle it > > back to ata66 mode to see if the problem still exists. How is this done? > > > > -Bill > > > > Try this > > sysctl -a | grep "hw.ata.*" > > and check out man sysctl. > > Ian Thanks for the reply. The only options I have through sysctl are hw.atamodes, and hw.ata.ata_dma both of which only allow turning DMA on and off. I would like to leave it on, but force the controller to use UDMA4 (ata66) instead of UDMA5 (ata100) Is there a method for this, or is it an on/off proposition? -Bill To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message