Date: Sun, 1 Dec 2002 12:48:21 +0100 (CET) From: =?ISO-8859-1?Q?G=E9rard_Roudier?= <groudier@free.fr> To: "Ronald F. Guilmette" <rfg@monkeys.com> Cc: Wilko Bulte <wkb@freebie.xs4all.nl>, "Justin T. Gibbs" <gibbs@scsiguy.com>, <freebsd-scsi@FreeBSD.ORG> Subject: Re: Upgrade from Adaptec 2940UW to 29160N - Problem solved! Message-ID: <20021201124031.B2519-100000@localhost.my.domain> In-Reply-To: <15086.1038605400@monkeys.com>
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On Fri, 29 Nov 2002, Ronald F. Guilmette wrote: > In message <20021129202056.A59622@freebie.xs4all.nl>, you wrote: > > >On Fri, Nov 29, 2002 at 11:04:45AM -0800, Ronald F. Guilmette wrote: > >> > >> In message <2793220000.1038502309@aslan.scsiguy.com>, you wrote: > >> > >> >>>> The only mystery that still remains after this whole ordeal is ``= Why > >> >>>> was it possible to boot from the mis-allocated partition back whe= n I > >> >>>> was using the Adaptec 2940UW, even though it was clearly _not_ po= ssible > >> >>>> to boot from the exact same bleedin' partition when using a newer= and > >> >>>> ``more advanced'' Adaptec 29160N ? > >> >>> > >> >>> Most likely because the setting for "extended translation" was not= the > >> >>> same on both controllers. > >> >> > >> >> Actually, it was. I am quite sure on that point. > >> >> > >> >> Both controllers had "BIOS support for disks > 1 GB" set to "disble= d". > >> > > >> >And you use a geometry of 255/63? That's just plain wrong. 8-) > >> > >> It is? > >> > >> Who says it is? > > > >Justin, who happens to work Adaptec, and has been one of the chief > >developers of the FreeBSD SCSI subsystem > > OK. That's good enough for me. > > But I wish that some of this stuff was written down someplace, for > the benefit of poor ignorant sods like me who are just trying to > make their peripherials work. > > > P.S. As we speak, I am typing this on a machine whose root partition is > on my shiny new IBM 18GB SCSI drive, with geometry set to 255/63, *and* > the 29160N it is hooked up to is (I'm quite sure) set to "Support for > disks > 1GB" *disabled*. > > So if this isn't supposed to work, then somebody please explain to me > why it _does_ clearly work. The BIOS can read the partition table and fix your broken setup when possible. One BIOS is probably slightly more lazy than the other one. G=E9rard. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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