Date: Tue, 12 Mar 2002 15:26:12 +0100 (CET) From: Jan Srzednicki <winfried@student.uci.agh.edu.pl> To: stable@FreeBSD.ORG Subject: ATA suggestion Message-ID: <Pine.GSO.4.44.0203121515350.20291-100000@student.uci.agh.edu.pl>
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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
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