I purchased a WD 1 TB My Book DVR Expander in December and have been trying periodically to hook it up ever since. Result is always the same, TiVo doesn't see the Expander at all. On the advice of Western Digital tech assistance I have run diagnostics on the Expander on my computer and it checks out as all OK. I have read online that some have had problems when there are other external devices connected to the TiVo and possibly that is the issue I'm having. I have cable with Cox in the greater New Orleans area and sometime back they required that I use a "Tuning Adapter" (TA) with my TiVo to get some of the channels. I tried connecting the Expander with the TA disconnected, plugged in but turned off and every combination I could think of, but always got the same result. TiVo just doesn't see the Expander. I have read that rebooting can cause problems with TiVo units and I am getting concerned since each attempt to connect the Expander requires a reboot. The only thing I have not tried is changing the Esata cable, but I am using the one that came with the Expander and I have no reason to think that there is anything wrong with it. Any suggestions as to what I can do/try? I am at a loss for how to proceed.