From owner-freebsd-stable Tue Mar 12 6:26:31 2002 Delivered-To: freebsd-stable@freebsd.org Received: from student.uci.agh.edu.pl (student.uci.agh.edu.pl [149.156.98.60]) by hub.freebsd.org (Postfix) with ESMTP id D43E837B404 for ; Tue, 12 Mar 2002 06:26:22 -0800 (PST) Received: by student.uci.agh.edu.pl (Postfix, from userid 25828) id 3D80464643; Tue, 12 Mar 2002 15:26:12 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by student.uci.agh.edu.pl (Postfix) with ESMTP id 3748A6F62F for ; Tue, 12 Mar 2002 15:26:12 +0100 (CET) Date: Tue, 12 Mar 2002 15:26:12 +0100 (CET) From: Jan Srzednicki To: stable@FreeBSD.ORG Subject: ATA suggestion Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hello, Recently I had some problems with my ATA drive; I was using the CMD 649 chipset on auxilary controller card and my system halted several times with errors on resetting the first drive (which was running in UDMA 100 mode). I took a different controler (CMD 649 compatible, different vendor), but that didn't work. I'm suspecting that the drive doesn't like the UDMA 100 mode (although it says it does ;). It worked fine on 33 for more than one year. The point is that I miss some option to downgrade the ATA mode - like I want to set UDMA 66 for that drive, not UDMA 100 (maybe it would help), but I couldn't find any option to do so. Is it hard to make some sysctl setting which would force given mode (assuming the drive supports it of course)? Some time ago I had a similar problem with a drive that was detected as 66 on 40-wire cable (it was a slave drive; the master was an ATAPI CDROM working in UDMA 33 mode, hw.ata.atapi_dma turned on). The drive failed to work in DMA at all, and it dropped to PIO mode. I think the solutian would be just forcing the 33 mode.. but.. -- Winfried mail: winfried@dream.vg http://violent.dream.vg JS500-RIPE Warning: Never underestimate the power of stupid people in large numbers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message