I have installed new drives using my G5 but of course it has 2 Hard drive slots. I want to put a new drive in my MacBook Pro but I want to use one of my many external drives so I don't need to buy a enclosure. Before I open the laptop up I wanted to make sure I can use my Western Digital Firewire drive. I have done the clone, and now I am simply waiting to instal the new drive and clone the new drive from the external drive. So before I open the laptop up I wanted some advice, or if anyone thinks this is a bad idea. I have opened up other Macbook's just not mine, yet. So I do not want to open it up too many times. I love opening my G5, but IMO laptops are not as fun to open, no simple latch like a G5. I never used a external drive to boot up the system, I have my Mac OS Tiger disc on hand too. From everything I read it seems okay to do, just want to check with my fellow forum friends. Thanks!