Date: Wed, 9 Aug 2000 19:31:26 -0400 From: "Andrew C. Hornback" <hornback@wireco.net> To: "'Aram Compeau'" <aram@tibco.com> Cc: <questions@freebsd.org> Subject: Boot sequence on mixed IDE/SCSI systems (was: RE: forcing which SCSI device to boot from) Message-ID: <001201c00259$f0a899a0$d4776bce@challenger> In-Reply-To: <39919B81.8381BE5D@tibco.com>
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> -----Original Message----- > From: owner-freebsd-questions@FreeBSD.ORG > [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Aram Compeau > Sent: Wednesday, August 09, 2000 1:57 PM > To: Mike Tancsa > Cc: Kenneth D. Merry; questions@FreeBSD.ORG; hardware@FreeBSD.ORG > Subject: Re: forcing which SCSI device to boot from > > > I have no experience with IDE RAID controllers, but I believe > you are normally > stuck booting from an IDE drive if you have a system with > mixed IDE ? SCSI drives. > However, I know you said the BIOS seems to see the IDE RAID > controller as a SCSI > device (which I found surprising). Anyway, just a thought. > > Aram Actually, it's not as crazy as it might seem for a machine to consider a "foreign" (i.e. non-native) IDE controller as a SCSI controller. In both Windows NT and 98, my Promise Ultra 33 and 66 are considered SCSI controllers due to the way that they operate. There's a better explanation of that on Promise's site. As to the boot sequence, it all depends on how you work with it. I've had a machine with 2 SCSI controllers, a PCI IDE controller and 2 onboard IDE controllers (just for experimentation). I could make the first SCSI controller on the PCI bus boot or the onboard IDE boot, but not the other SCSI controller or the PCI IDE controller. Switching the cards around in the PCI slots seems to give boot precedence to the card closest to/in slot 1. YMMV... --- Andy To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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