On Wednesday, November 27, 2002, at 07:24 AM, Jon Glass wrote:
Yes.on 11/23/02 11:54 PM, Obi-Wan at [EMAIL PROTECTED] wrote:Restart the computer and immediately after the startup sound, press and hold
the key combination Command-Option-O-F. Release the keys when you see
"Welcome to Open Firmware." At the prompt, type: eject cd. Press Return,
then wait. The drive should eject any disc that is inside the mechanism.
You�ll see �ok� when it is done then type �mac-boot�
and hit return.
Can one force the Mac to boot from a CD via Open Firmware as well?
For New World ROM machines (B&W G3s and newer), use "setenv boot-device cd:,\\:tbxi". On old-world machines it gets more dicey. Possible, but YMMV.
This uses the set environment variable command (setenv) to change the value stored in the boot-device variable. If you're gunshy and want to see the current value in the boot-device variable before you change it, just type "boot-device" and it will return the current startup disk and path in some format like:
"mac-io/ata-1@1f00/@0:12,\\:tbxi"
where the disk and its partition are listed first in the part to the left of the comma and the "\\:tbxi" corresponds to "/System/CoreServices/(whatever file exists with file type tbxi)". tbxi is just a boot loader, in our case the file called BootX has a type of "tbxi" and creator of "chrp".
Some handy-dandy Open Firmware resources:
From the Mothership:
<http://developer.apple.com/technotes/tn/tn1061.html>
<http://www.bombich.com/mactips/openfirmware.html>
(Links from this page:
<http://www.netneurotic.de/mac/openfirmware.html>
(good for boot variables and other nifty keen stuff)
<http://www.netbsd.org/Ports/macppc/faq.html#ofw>
(from another perspective...)
HTH
Phil Burk
________________________________________________________
Systems Support Technician Wiley Publishing, Inc.
10475 Crosspoint Blvd Indianapolis, IN 46256
317.572.3049 phone 317.572.1049 fax
[EMAIL PROTECTED] [EMAIL PROTECTED]
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