OSX holding down "c" isn't starting computer from disk

[lemmingboy]

You can also try holding down the option key at startup. This should show all bootable volumes -- including CDs. Sometimes this will show the CD even if you cannot boot from it by holding the C key.

Also you can go to System Preferences and choose startup disk and then choose CD. If this works to get it to then boot up from the drive again you have to either hold down the option key OR hold down the mouse button to force eject the CD before booting.

Shawn