I'm looking to upgrade my macbook hard drive and I was wondering if it would be possible to use my brothers macbook to do this? I've been reading how toos and they all seem to include cloning to an external hard drive, which I don't have. Could I: 1. Take out the hard drive in his macbook. 2. Insert my new hard drive in his macbook. 3. Run the startup disk and run firewire target disk mode. 4. Connect my mac and copy the hard drive over. 5. Remove the new hard drive and replace his old one. 6. Insert the new hard drive in my macbook. Can anyone see a problem with this? Having never done any of these things my idea is purely theory so feel free to shoot me down. Im just looking to save some money by not paying for someone else to do it or buying an external hard drive. Thanks, Jack. p.s. Would it be possible/ easier to use a hard drive enclosure or would it need formatting?