I have a 15" MacBook Pro 2.0 GHz from a couple of years ago. It has a 75 GB harddrive which I am upgrading to 500 GB. My plan has been to simply clone the drive using the enclosure I purchased. But after reading some posts here, I see I have a few options. 1. I could clone. This sounds the least risky since theoretically I should end up with everything exactly the same. I do wonder about how it clones the files the operating system is using at the time, but I guess I'll just trust it knows what its doing. 2. A fresh install sounds ideal. I have had my laptop for a couple of years, so I imagine a fresh install would do it some good. But what does that mean exactly? Is it basically starting from scratch? Would I have to reinstall everything, not just the OS but also all of my programs, individually? And then transfer all of my data (music, photos, etc) given that I can find it all? That sounds a bit laborious and what if I missed something? Or am I misunderstanding the process? 3. A few months ago I purchased a Time Machine and I have been using it to back up my laptop and my external harddrive. Can I really restore my entire internal harddrive from Time Machine? I'm pretty sure I would have set my Time Machine to back up everything especially since it's a 1 TB drive. Any drawbacks to doing it this way? So, which method do you think is best? Thanks!