Hello,
This is a problem we are following with the dual processor machines. For
the time being, use the following instructions to turn off the 2nd
processor. Please note that following instructions is an UNSUPPORTED
WORK-AROUND. It is NOT recommended that anyone other than experienced
users attempt to disable the processor.
Go to your Applications folder and open the file named Utilities. In
Utilities you will see an application named Terminal. Terminal is the
gateway into the world of Unix (Darwin specifically) through Mac OS X.
Double-click on the Terminal application to launch it.
Once inside Terminal, you will see something that closely resembles
this:
Welcome to Darwin!
[johndoe's-Computer:~] johndoe%_
The underscore symbol (_) shown at the prompt denotes where your cursor
is. When you are at this point, type the following text:
sudo nvram boot-args="cpus=1"
You must type the above line exaclty as it appears. You may copy and
paste this command from here into the terminal application if you wish.
Press return after you have entered the command. You will be prompted
for a password at this point. So far, your screen should look like this:
Welcome to Darwin!
[johndoe's-Computer:~] johndoe% sudo nvram boot-args="cpus=1"
Password:_
Type in the administrator's password that you created when you installed
OS 10.x.x. When you have entered the password, press return. Note that
as you are typing, the cursor will not advance and you will not be able
to see your password as you enter it. Rest assured that your password is
there... it is just not being displayed. This is a Unix-ism.
After you have successfully entered the Administrator's password and
pressed return, the terminal will then provide you with the initial
prompt. If you have done everything correctly, your terminal window will
look like this at this point:
Welcome to Darwin!
[johndoe's-Computer:~] johndoe% sudo nvram boot-args="cpus=1"
Password:
[johndoe's-Computer:~] johndoe%_
When you have reached this point, the modicfication has been completed.
You must now quit Terminal and restart your computer. If you received an
error message at anytime like "Command not found", Try again. You may
have mis-typed something.
Whenever you wish to turn the 2nd processor back on, you with substitute
"cpus=1" for "cpus=2". The command will look like this:
Welcome to Darwin!
[johndoe's-Computer:~] johndoe% sudo nvram boot-args="cpus=2"
Password:
Thank you,
MacPlay Customer Support
