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PowerMac G5 will not boot into Open Firmware, or Boot Manager

I have a PowerMac G5 and it refuses to boot into Open Firmware. I used Command + Option + O + F and held down the Option key. I have tried 3 different Keyboards but no avail.

PowerMac, Mac OS X (10.4.11)

Posted on Dec 30, 2012 5:46 PM

Reply
19 replies

Dec 31, 2012 7:21 PM in response to Mak128

Hmmm,


Does it boot to Single User Mode, CMD+s keys at bootup, if so try...


/sbin/fsck -fy


Repeat until it shows no errors fixed.


(Space between fsck AND -fy important).


Resolve startup issues and perform disk maintenance with Disk Utility and fsck...


http://docs.info.apple.com/article.html?artnum=106214


Does it boot from your Install Disc, or show boot choices when holding alt at bootup?

Dec 31, 2012 7:39 PM in response to Mak128

Firmware password protection in Mac OS X ...


http://support.apple.com/kb/HT1352


It would block usage of all the startup keys, like C, N, T, D, CMD+s, CMD+Option+p+r, CMD +v, Option, and Shift, as well as booting from anything but the Hard Drive.


Force Removing Password Protection


1) Add or remove DIMMs to change the total amount of RAM in the computer.


2) Then, the PRAM must be reset 3 times. (Command + Option + P + R).


http://www.securemac.com/openfirmwarepasswordprotection.php

PowerMac G5 will not boot into Open Firmware, or Boot Manager

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