is not a "one shot" deal.
That change continues in effect until it is changed again.
Shut down the computer
Reboot the computer and hold down the mouse button when you hear the chime.
Keep it down until the disk ejects
What was the Live CD going to do for you?
I was attempting to gain access to an old external harddrive, so I downloaded a live CD. I changed the startup disk in the system preferences and restarted my computer. To my knowledge this was a one time change, meaning it would only target my DVD drive for one boot. So I used the live CD and I can't seem to eject it from my computer. Also, I can't force it to boot from my harddrive. I know keystrokes can initiate a different boot but nothing seems to work.
Somethings I have tried:
* While turning on the computer....
* option key
* eject button
* Allowing the mac to boot into the live disk and attempting to eject the disk that way
Any help would be great. Let me know if I need to provide any more details. Thanks!