Re: hardware/ software problem on boot
Re: hardware/ software problem on boot
- Subject: Re: hardware/ software problem on boot
- From: Jonas Maebe <email@hidden>
- Date: Tue, 20 Jun 2006 15:00:55 +0200
On 20 jun 2006, at 14:45, Tony OCallaghan wrote:
nvram autoboot?="false" in the terminal, this causes the machine to
go into
the open firmware, however at the start it still requires me to
hold down
the cmd + option + f + o. Upon further investigation I found that just
holding the cmd key will boot the machine (it doesn't however give
me the
choice of operating systems to boot like it should).
You have to hold down option to get that dialog, not cmd.
I tried resetting the
pram by using the command cmd + option + p + r, however this did
not work
properly, I did however get the reset the pram while in the open
firmware
prompt. This obviously did not fix the problem. Then i tried to
reset the
nvram by using the command cmd + option + n + v at startup,
I've never before heard of the the combination cmd + option + n + v.
The way to reset most of the nvram is by holding cmd + option + p + r
until the machine has rebooted itself three times (as opposed to only
once).
which actually
brought me to the dialogue you would expect when you hold down the cmd
button only i.e. it brought me to the dialogue where you can select
which
operating system you want to boot.
Probably triggered by the option key you were holding down.
I reset the nvram when I was in the open
firmware prompt which had no effect. It cannot be a problem with the
keyboard input boot driver since when i'm in open firmware it
recognises all
the buttons on the kayboard correctly.
Does anyone have an clue what is going on. It doesn't seem to be a
problem
with the firmware.
You can try to reset the pmu:
http://docs.info.apple.com/article.html?artnum=14449
Jonas
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