Date: Thu, 27 Feb 2003 03:05:53 -0600 From: Len Conrad <LConrad@Go2France.com> To: freebsd-questions@freebsd.org Subject: Re: can't get to ATA133 (Addendum to previous post) Message-ID: <5.2.0.9.0.20030227025914.07dc69e8@mail.go2france.com> In-Reply-To: <200302271054.39505.will@unfoldings.net> References: <200302271043.05919.will@unfoldings.net> <5.2.0.9.0.20030226165710.028ad2f0@mail.go2france.com> <5.2.0.9.0.20030227022946.07db1e40@mail.go2france.com> <200302271043.05919.will@unfoldings.net>
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>There are two things you might want to look at. First it trying to set the >modes manually after boot. This is not recommended, and I would not do it >unless on a read only file system, if setting the higher mode fails, or >fails partially, you might be in for a world of trouble. To do this, you >can try: > >atacontrol mode ata4 udma6 --- >atacontrol mode ata6 udma6 --- mx# atacontrol mode ata2 udma6 --- Master = UDMA33 Slave = ??? mx# atacontrol mode ata3 udma6 --- Master = UDMA33 Slave = ??? >Also, you might want to look at the length of the cables. According to the >Ultra-ATA (UDMA) standards, an 80-conductor cable must be no longer than >30cm, or about 12". Cables of longer length begin to build up too much >noise, even for the double-conductor design to combat. While Promise's BIOS >and their own drivers (as seen on Windows) might tolerate these noise >levels, I'm very sure ata(4) will not. I've already thought of that and the guy on site says the Promise cables are 18 inches. Len To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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