Date: Thu, 16 Dec 1999 14:20:03 -0800 (PST) From: Ian Struble <ian@broken.net> To: Alfred Perlstein <bright@wintelcom.net> Cc: Jonathon McKitrick <jcm@dogma.freebsd-uk.eu.org>, Alejandro Ramirez <ales@megared.net.mx>, freebsd-questions@FreeBSD.ORG Subject: RE: LBA speed enhancements Message-ID: <Pine.BSF.3.91.991216141344.23637a-100000@disavowed.broken.net> In-Reply-To: <Pine.BSF.4.21.9912161355430.4557-100000@fw.wintelcom.net>
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> > > > > > On Thu, 16 Dec 1999, Alejandro Ramirez wrote: > > > > Are you refering to the "0xa0ffa0ff" flags???, this flags are for > > > >improve performance by enabling DMA use, enable the multi-sector I/O and the > > > >32BIT I/O modes to IDE Disks. > > > > > > Yes, and there is also a bit to set LBA mode. At least, that's what LINT > > > says. > > > > The specific flag that Jonathon is talking about is the '1' below. Using > > it we would have "0xb0ffb0ff" for flags. Which I can not say that I have > > ever done nor remember seeing anyone else talk about using. > > Oh.... I've talked about it, maybe 'talked' is being nice. > > I strongly suggest staying away from turning on the LBA modes on > drives until the maintainers of the drivers test and announce that > it no longer eats disks when doing a crashdump when LBA is active. I must have been out of the loop when you 'talked' about it last. But I don't plan on playing with it untill someone says that it is safe togo back into the pool. Are you the lifeguard on duty?(ie. the maintainer for the wdc driver)? Ian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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