What is the method to add an eSATA drive if I previously upgraded my TiVo?
These steps are unnecessary if you are adding Western Digital’s My DVR Expander to an unmodified TivoHD. In that case, just follow the instructions in FAQ #7. If building your own eSATA drive, be sure to see FAQ #25 for drive, cable, and enclosure recommendations. This method requires that you remove the TiVo’s internal drive, connect it to your PC, and use the WinMFS or the MFSLive software. It is not difficult, but it does require some time. Instructions are below.