On Mon, 3 May 2004 08:57:36 +0200, Volker A. Brandt <vab@bb-c.de> wrote:
> 
> > ahc0 at pci2 dev 2 function 0: Adaptec 29160 Ultra160 SCSI adapter
> >
> > What is the command to tell my U5 to boot on the first scsi disk (SCSI ID 0, part a) ?
> 
> You can only boot off adapters that OBP recognizes.  The Adaptec
> adapter almost certainly is not recognized (it would need to have
> Open Firmware Forth code on board).
> 
> Your options are to put the IDE disk back in, to boot off a floppy
> (really! :-), or to boot off the net.
> 
> A general method to find the recognized disk controllers is the
> OBP command "show-disks".  You can then select the controller
> you want, and boot off the first disk using "boot ^Y/sd@0,0:a".
> The Control-Y will substitute the path to the selected controller.
> 
> HTH.
> 
> Meilleures salutations -- Volker
> --
> ------------------------------------------------------------------------
> Volker A. Brandt                  Consulting and Support for Sun Solaris
> Brandt & Brandt Computer GmbH              WWW: http://www.bb-c.de/~vab/
> Meckenheim, Germany                                   Email: vab@bb-c.de
> 

You can also toss the 29160 in a Mac, and use Adaptec's flash stuff to
put OpenFirmware Forth code on it. I have a 2940-UW in my Ultra5 that
I boot from (it was flashed for OFW), and I've been told that you can
do it to the 29160s as well.