Advertisements Ok, I'm a long-time member but infrequent poster, mostly because I'm a PC tech and, even more so, I haven't had much trouble with my TiVos over the years. I currently have a Roamio Plus or Pro (6 tuners w/cablecard) which is about 4-5 years old. A little over a year ago I was low on space so I decided to plug in my external 1TB WD My DVR Expander that I had from an older TiVo into my Roamio. Worked fine, but now the expander disk has died. Lost all my shows, but the Roamio still works fine. My question is: How would I go about getting the new 1TB hard drive that I put into the old WD Expander case to work with my Roamio? The drive was formatted for a PC but never used. Tried just plugging it in and rebooting the Roamio but that doesn't work, says its incompatible. Would I have to take out the Roamio's internal disk, connect it and the new external disk to a PC (both via SATA I assume) and use WinMFS to marry them first? Would this even work? Does it matter that the external disk is ultimately going to be connected to the Roamio via the rear eSATA port? Is there any way to do it without removing the Roamio internal drive considering that normally the TiVo itself formats an external drive when plugged in? IOW is there a way to pre-format the external hard drive so the Roamio thinks it's another My DVR Expander drive when plugged in? I'm still using TE3 and have no desire to upgrade. Thanks in advance..