From owner-freebsd-questions Thu Dec 16 16:53:10 1999 Delivered-To: freebsd-questions@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 1FB5615004 for ; Thu, 16 Dec 1999 16:53:03 -0800 (PST) (envelope-from bright@wintelcom.net) Received: from localhost (bright@localhost) by fw.wintelcom.net (8.9.3/8.9.3) with ESMTP id RAA10381; Thu, 16 Dec 1999 17:22:46 -0800 (PST) Date: Thu, 16 Dec 1999 17:22:46 -0800 (PST) From: Alfred Perlstein To: Ian Struble Cc: Jonathon McKitrick , Alejandro Ramirez , freebsd-questions@FreeBSD.ORG Subject: RE: LBA speed enhancements In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 16 Dec 1999, Ian Struble wrote: > > > > > > > > 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)? No. -Alfred To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message