From owner-freebsd-questions@FreeBSD.ORG Tue Aug 16 04:51:16 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C3C2616A41F for ; Tue, 16 Aug 2005 04:51:16 +0000 (GMT) (envelope-from kstewart@owt.com) Received: from smtp.owt.com (smtp.owt.com [204.118.6.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7BB1743D46 for ; Tue, 16 Aug 2005 04:51:14 +0000 (GMT) (envelope-from kstewart@owt.com) Received: from topaz-out (owt-207-41-94-233.owt.com [207.41.94.233]) by smtp.owt.com (8.12.8/8.12.8) with ESMTP id j7G4n3ie021149; Mon, 15 Aug 2005 21:49:03 -0700 From: Kent Stewart To: freebsd-questions@freebsd.org Date: Mon, 15 Aug 2005 21:49:20 -0700 User-Agent: KMail/1.8.2 References: <430128F1.9@mkproductions.org> <430151A6.2090405@mac.com> In-Reply-To: <430151A6.2090405@mac.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200508152149.20702.kstewart@owt.com> Cc: Mark Kane Subject: Re: How to Force UDMA100 Mode on Boot? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Aug 2005 04:51:16 -0000 On Monday 15 August 2005 07:38 pm, Chuck Swiger wrote: > Howdy-- > > Mark Kane wrote: > [ ... ] > > > I know about atacontrol to set it manually, but I'd like to set > > UDMA100 mode automatically on boot since I have 5 hard drives. I > > also know the sysctl hw.ata.ata_dma, but that doesn't say anything > > about using 100 vs 133. > > Your BIOS ought to have a setting which throttles this down. > > Simply changing in within FreeBSD might be a little late, since the > system has to boot far enough to get to that, or you might run some > other OS on the machine one fine day. Anyway, consider: > > touch /etc/rc.local > echo "/sbin/atacontrol mode ..." >> /etc/rc.local There used to be a Maxtor utility that would set the maximum ATA rate on Maxtor ATA drives. I had one of those motherboard with a broken Southbridge and that was the easy way out until I replaced the motherboard with a good one. If you aren't using Maxtor's, you can look for a utility to do what the Maxtor utility did. Kent -- Kent Stewart Richland, WA http://users.owt.com/kstewart/index.html