Date: Thu, 27 Feb 2003 10:08:48 +0100 (CET) From: Soeren Schmidt <sos@spider.deepcore.dk> To: Len Conrad <LConrad@Go2France.com> Cc: freebsd-questions@freebsd.org Subject: Re: can't get to ATA133 (Addendum to previous post) Message-ID: <200302270908.h1R98n4c083623@spider.deepcore.dk> In-Reply-To: <5.2.0.9.0.20030227025914.07dc69e8@mail.go2france.com>
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It seems Len Conrad wrote: > > >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 --- That wont change anything at all... > >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. ATA cables for UDMA > 2 can be up to 45cm long according to spec. > I've already thought of that and the guy on site says the Promise cables > are 18 inches. Which is just about right... -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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