My Premiere's un-modded HDD died early this morning. It was stuck on the'Welcome! Starting up...' screen. No sweat, I wanted to get a new Roamio anyway. I ran up to Best Buy and picked up a 75 hour model for $176 (they price matched Amazon) and I added a 4 year warranty for $35. I got the Roamio activated, CableCARD working, it rebooted to install an update and all was going fine except it says that my Western Digital My Book AV DVR Expander 1TB eSATA (part number WDBABT0010HBK-00 0611B) is an Unsupported device. I called TiVo and they wanted to know what my Drive ID was. I don't know and their advice was to buy a new Western Digital My Book AV DVR Expander 1TB from them for $130. They would not give me a part number. Why won't my WD DVR Expander work with Roamio? I have found a similar WD eSATA (part number WDBABT0010HBK-NESN) at another online store for $88. Will this work with Roamio? Thanks!