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Date: Tue, 22 Jun 2004 14:58:56 -0700 (PDT)
From: Doug White <dwhite@gumbysoft.com>
To: Vinod Kashyap <vkashyap@amcc.com>
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cc: Patrick Hurrelmann <outi@bytephobia.de>
cc: freebsd-current@freebsd.org
Subject: RE: Problems installing Fre*BSD with 3ware 9500S-4LP
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On Sun, 20 Jun 2004, Vinod Kashyap wrote:

>
> Looks like you cannot reboot after an install since the
> driver is not part of the OS you just finished installing.
>
> This is what you can do:
>
> 1. While installing the OS, load the driver from a floppy
> (sysinstall->Configure->KLDLoad).  You are probably already
> doing this.
> 2. After installation, during reboot, escape to the loader
> prompt, and again with a floppy with the driver inserted,
> load the driver by doing 'load disk0:twa.ko'.
> 3. Do a 'boot' and you should be able to boot.

Vinod, the problem is that loader itself is crashing.  It dies before you
even get the loader prompt. Its as if the BIOS is not reading the array
properly and returns bad data, or the BIOS is corrupting memory during
certain reads.

There are known cases where turning on DMA in the BIOS can cause BTX
panics due to overly-promiscuous BIOS code, but this doesn't seem to be
one of those cases.

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org