Subject: Re: CD booting info wanted
To: Todd Vierling <tv@wasabisystems.com>
From: Michael Wolfson <mw@costello.cnf.cornell.edu>
List: port-macppc
Date: 10/05/2000 20:40:47
At 8:03 PM -0400 10/5/00, Todd Vierling wrote:

:)I've been browsing the list archives, and can't find a straight
:)answer.  What's needed on an ISO CD to provide a bootable system, and what
:)kind of boot environment does it use at that point?
:)
:)(Context:  I'd like to get the 1.5 CD release to boot directly on macppc.)

That'd be (really* cool.

AFAIK, there can be two approaches:
Somehow figure out how to set the boot sectors to load either ofwboot.xcf
or ofwboot.elf depending on which OF version.  I think the mkhybrid author
was working on this a little.  Try contacting him.  I don't know if this
method will work for OF 1.0.5 because it seems to load the MacOS boot ROM
before looking on the CD-ROM for boot information.

Just put both ofwboot.elf and ofwboot.xcf in the root level of the ISO
image and have the user manually enter Open Firmware and type a command to
boot from it.  All OF versions support ISO 9660 format filesystems, and can
thus load ofwboot.* directly.  My understanding was that ofwboot.* can load
a kernel from an ISO filesystem.

Good luck,
  -- MW