Date: Thu, 19 Aug 1999 13:13:01 -0600 (MDT) From: "Kenneth D. Merry" <ken@kdm.org> To: forrie@forrie.com (Forrest Aldrich) Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: SCSI boot order (multiple host adapters) control Message-ID: <199908191913.NAA31671@panzer.kdm.org> In-Reply-To: <4.2.0.58.19990819144627.00a71670@216.67.12.69> from Forrest Aldrich at "Aug 19, 1999 02:46:53 pm"
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Forrest Aldrich wrote... > I have an ASUS motherboard which has an integrated Adaptec SCSI controller. > > I just installed an adaptec 2940, and the system insists on trying to boot from the > external case that's attached to the 2940. I read through the LINT file for the > kernel config and tried using: > > controller scbus0 ahc0 > controller scbus1 ahc1 > > ... and some variations of that, but no go. > > It's not clear to me if the BIOS is to blame or not... I tried looking through the > SCSI Select Setup and the system BIOS, but did not see anything that would > change this behavior. > > What am I missing here? You haven't mentioned whether you're running -current or -stable or what. There are some bugs in the probe order in -current when you have multiple PCI busses. But, in general, what you're missing is that the system will probably boot with the first bootable device on the first it finds. Normally you could "fix" this by swapping controllers around, but since one of them is on the motherboard, you can't do that. You should probably hardwire things in your kernel config file, like you were trying to do: controller ahc0 controller ahc1 controller scbus0 at ahc1 controller scbus1 at ahc0 That should swap your SCSI busses around and make the system boot off the internal controller, assuming it pops up as ahc1. You can also hardwire disks, like this: device da0 at scbus0 target 0 unit 0 device da1 at scbus1 target 5 unit 0 Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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