I recently purchased a Tivo Premier and a WD20EURS hard drive from Amazon with the intention of upgrading the Tivo hard drive. After considerable research online, I downloaded the premiere_linux_inc_supersize_jmfs-rev104.iso and the wdidle.iso and burned them each to cds. I attached the original Tivo hard drive and the WD20EURS (straight out of the box; no formatting) to my computer and booted with the jmfs disk. After a bit the screen, where choice of Copy, Expand, Supersize, Exit etc. is shown, appeared, but with the Copy selection grayed out along with the msg that only one drive was attached. I had noticed on start up that the WD20EURS was making a clicking sound; i.e. four clicks, slight delay, and then a fifth click repeated over the period of about a minute followed by apparent complete shutdown of the drive. Repeated boots produced the same results. I figured I had received a bad drive, so I exchanged it for a new one. Much to my chagrin, I got the same results when attempting to copy to the new drive; same messages, same noise. I removed and installed the new drive in a second computer where Disk Management listed the drive with a red X with the message that the drive must be initialized. Upon selecting initialize I get the msg Data Error (Cyclic Redundancy Check). During the period the new drive was installed in the second computer, it was clicking and starting up and shutting down. To try and determine if it was the WD20EURS or a problem with my computer, I successfully initiated copy to another SATA drive, so apparently the jmfs program works. What is going on? The odds that I would receive two bad drives with the same symptoms would be infinitesimal. Help!