Right off the bat, please dont preach to me and try to convince me why defrag is pointless. I have already read many articles on defrag on a Mac and they all to seem to say that its not necessary but there is a slight improvement to the system. So now my question is how do you use CDMaker for iDefrag? I burned the DVD and then restarted my computer and held down ALT. It then gave me the option to boot from the DVD. But once I select the option my computer just restarts. Any help will be appreciated!