I have a series 1 with a failed hard drive. I have a good backup, and I'm trying to install 1 160gb drives. I understand that should only see 137gb on each. I can reload the image on to the first drive, and it works. I can expand that image on that drive and have still have a bootable hard drive. However using mfsadd to include the second drive and nothing is recognized back in the TiVo. Should this combination work? I've tried install and expand multiple different ways with the same results each time. What am I missing?