Date: Tue, 27 Apr 1999 12:46:14 -0700 (PDT) From: Doug White <dwhite@resnet.uoregon.edu> To: Phil Homewood <philh@mincom.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Weirdness with Adaptec 7890 Message-ID: <Pine.BSF.4.03.9904271244230.2463-100000@resnet.uoregon.edu> In-Reply-To: <199904270804.SAA05308@porthole.mincom.oz.au>
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On Tue, 27 Apr 1999, Phil Homewood wrote: > Doug White wrote: > > > Installed using an Adaptec 2940UW, system boots and runs fine. > > > Switch the disks to the onboard 7890 and I get "Invalid system disk". > > > > FreeBSD isn't emitting that error, it soulnds like it's coming from your > > BIOS. > > Agreed. But is the BIOS saying that because it hates the disk, or > because it hates the FreeBSD bootblocks? The BIOS can't seem to find the MBR. Does this disk have slices (compatbility mode) or did you make it dedicated? > > What drive is the FreeBSD boot drive being mappd to on the AIC7890? > > It's da0, which is disk 0 on the 7890. (Is that what you're asking?) > It's on the Ultra2 bus, and works fine if I use the bootblocks on > the floppy - just not the ones on da0. (Boot also fails in the same > way if I connect the disks to the non-Ultra2 connector.) > > > You may want to pull the 2940 out if you aren't using it. > > Did that. The 2940 was already pulled the first time I met this > problem. Its presence or absence has no effect, same error either > way. Just wanted to make sure. > Interestingly, at the suggestion of Guy Helmer, I noted the > boot messages (from floppy kernel, and installed kernel booted > off fd0's bootblocks) and the geometry reported in both cases > was different to the geometry reported when booting from the > 2940. Oh, shoot, that's right -- the 2940 does have big disk translation. What's the status of the >1GB disk setting in the AIC7890's BIOS? These do need to match otherwise the BIOS will get confused. Doug White Internet: dwhite@resnet.uoregon.edu | FreeBSD: The Power to Serve http://gladstone.uoregon.edu/~dwhite | www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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