Date: Tue, 24 Jun 2003 10:31:32 -0700 From: Bill Campbell <freebsd@celestial.com> To: freebsd-questions@FreeBSD.ORG Subject: Re: Boot order with firewire 4.8-RELEASE Message-ID: <20030624103132.A27540@barryg.mi.celestial.com> In-Reply-To: <20030624071541.GB77226@happy-idiot-talk.infracaninophile.co.uk>; from m.seaman@infracaninophile.co.uk on Tue, Jun 24, 2003 at 08:15:41AM %2B0100 References: <20030623164024.A2684@barryg.mi.celestial.com> <20030624071541.GB77226@happy-idiot-talk.infracaninophile.co.uk>
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On Tue, Jun 24, 2003 at 08:15:41AM +0100, Matthew Seaman wrote: >On Mon, Jun 23, 2003 at 04:40:24PM -0700, Bill Campbell wrote: > ... >> My basic question is how does one control the order devices are scanned >> during the boot process? I would like to be sure that the system will come >> up after a power failure with no operator intervention if possible. > >It's not really the order that the disks are discovered which matters >as such, but that the device numbers for your system disks depend on >the presence or absence of the external drive. > >You can get round that by 'wiring down' the SCSI buses and devices in >your kernel config. Eg. assume that your boot drive is at LUN 0 on an >Adaptec SCSI interface. Then you could do: > > device scbus0 at ahc0 > device da0 at scbus0 target 0 unit 0 > >to ensure your boot disk always appears as da0. See the section 'SCSI >DEVICE CONFIGURATION' in /usr/src/sys/i386/conf/LINT for more details. Thanks! I'm climbing the learning curve on freebsd (largely ``learn by destroying'' :-). Bill -- INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software LLC UUCP: camco!bill PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 URL: http://www.celestial.com/ Do not meddle in the affairs of dragons, for you are crunchy and taste good with ketchup.
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