I'd been meaning to upgrade my 40GB TV for a while now before the Take 2 update came out and I finally got around to it. I used Engadget's tutorial at first but had troubles rebuilding the partition map in the end. I couldn't figure out what on earth the problem was but I couldn't make the new drive have the correct partitions and in the correct order. I then found AwkwardTV's tutorial and it turned out to be much faster/simpler. Compared to the Engadget one, you only have to copy the EFI and Recovery partitions (as opposed to the whole 40GB disk which takes hours). I assume if you did things as that tutorial states in the first place, you'll have better luck than me. For some reason though, the terminal tools weren't working out for me so I ended up biting the bullet and bought iPartition 3. After that, it was all smooth sailing. I did find the answer to a common problem though where people get it working, but can't upgrade the TV or do a factory restore. Turns out this happens when the partition order gets messed up. More specifically, the partition order should be: disk1s1 - EFI disk1s2 - Recovery disk1s3 - OSBoot disk1s4 - Media On my first try, my Recovery and OSBoot partitions were inverted so strangely enough, the TV would boot, but i couldn't do the update/factory-restore. Once I used iPartition and got things where they should be the problem disappeared. Here's a couple of pics I took during the process. http://gallery.mac.com/pradador#100118 Now where is that "Take 2" update ???