Subject: Re: Booting from 2940UW Controller
To: None <mw@blobulent.com>
From: James Tuman Nelson <jimtnelson@earthlink.net>
List: port-macppc
Date: 04/23/2001 23:11:41
Michael:

Let me guess:  because I have a 7500, I have to use the AV version of
v4.1 for flashing the 2940, regardless of whether the machine was
configured with AV or not when purchased.  Thus, I will not be able to
use the 2940UW to boot, unless some sort of new development comes about,
or I procure a nonAV machine, such as a G4.

Jim

Michael Wolfson wrote:
> 
> At 8:58 AM -0500 4/23/01, Donald Lee wrote:
> 
> :)At 8:20 PM -0500 4/22/01, jimtnelson@earthlink.net wrote:
> :)>Further, to my previous questions concerning booting NetBSD/macppc from
> :)>an Adaptec 2940UW controll:
> :)>
> :)>Why can I not load the boot loader from the installation disk and boot
> :)>to  the hard disk on a 2940UW controller?  The approach would be:
> :)
> :)the 2940UW has an "older" and a "newer" firmware.  The older firmware
> :)AFAIK is v3.0, and does not contain OF.  It relies on the Apple
> :)ROM to do its thing.  The newer version (4.x) is available on
> :)Adaptec's web site and has OF.  It is a little dated now, though, so
> :)it may not work well on newest machines to boot from the card.
> 
> Actually, he didn't say what model he was trying to use.  Adaptec has two
> versions of the 4.x firmware.  One for "A/V" macs (7300 - 9600), and one
> for everything else.  The "A/V" version does not have the "open" command,
> which is necessary for NetBSD to boot.
> 
> I know this, since I've got a 2940UW in my 7300.  In this case, drives
> attached to the adaptec card will not be usable until *after* the kernel
> has booted and recognized the adaptec card.
> 
> Jim, you'll need to boot your bootloader *and* kernel off of the internal
> SCSI busses, then have your root partition and usr on your adaptec SCSI bus.

How should I do this?

> 
> Good luck,
>   -- MW