Thanks for the info Rich. So it would be a linux command like one of these I found here? http://en.wikipedia.org/wiki/Dd_%28Unix%29 Using dd to duplicate one hard disk partition to another hard disk: dd if=/dev/sda2 of=/dev/sdb2 bs=4096 conv=noerror Using dd to clone a hard disk to another hard disk: dd if=/dev/ad0 of=/dev/ad1 bs=1M conv=noerror Sorry, I'm not a linux guy at all. It's bit-for-bit, but doesn't copy the empty bits? And the Tivo will see the full drive capacity? I don't need to figure this out now - just curious how it would work. BTW, my two HD Tivos both have Liftetime, so unless something dramatic changes in the broadcast and display of HD, I hope to keep them around for a long time.