Argh! My wife has a White Macbook Core Duo that desperately needs to be rebuilt. I went to reload OSX and low and behold, I cannot find her restore discs. I popped in a disc labeled "Macbook Mac OS X Install Disc 1" with OS version 10.4.6, AHT version 3A104, and Disc version 1.0 I thought this was for her machine since it says, "Macbook" not "Macbook Pro". But her machine kicks it out on boot and even kicks it out while in OS X. It is like it doesn't want to read the disc at all. My Pro reads it fine though. Think this is a optical drive problem or is the machine smart enough to know this is the incorrect disc? FWIW, I was able to burn a DVD backup of her machine and subsequently read it on her machine, so I am thinking the drive is OK... hum... * If this IS the correct disc and this IS an optical drive problem, than that means I cannot find my Macbook Pro (17" 2.33 Core 2 Duo) disc and I need to get a replacement for IT instead...! Help! Thank you!