I still have my old iBook that has either a fried screen or video card. So I purchased a MacBook to replace it and I booted the old one into target disk mode to transfer the information over to the one when I first booted it up and everything went great. Recently, I had thought of starting up the old iBook into target disk mode and then using my new MacBook to boot up via the iBook like you can boot up a Mac from an external drive connected via firewire, so I could de-authorize the iTunes on it and just go through and delete some files. But I couldn't get it to work. Is it not possible to do this with a Mac in the target disk mode?