Wow! I did not understand that from the threads I saw that TE4 formats the new drive up to 14 TB, probably because people were trying to copy content to larger drives and the focus was on that. I can get around copying directly to the new drive by using the Roamio as a bridge to move content from my PC via Tivo Desktop to my Roamio and then transfer to the Bolt. That's only computer time, not mine. The TE4 doing the formatting is certainly a horse of a different color. Thanks for setting me straight on this. Your right, this becomes an hour or so. By the way, I have not opened the Bolt. Does I need a standard motherboard to SATA HD cable like in a PC or is there a different connector to the MB in the Bolt? Also, I understand the TE4 eliminated the PC to Bolt "publishing" feature which is one of the reasons I want to blow out the storage on the Bolt. Do you know a way to directly upload content from the PC to the BOLT TE4? I did not see a way using KTMTTG or pyTivo. Thanks again!