I'm stuck. Bottom line, the upgraded Tivo keeps rebooting even after using WDIDLE3. I have an HD Tivo (not the older, original Series 3). I am trying to use JMFS to upgrade to a WD25EURS drive. Using JMFS, I copied the image from the original drive, and then I expanded the new drive. All that reported that it worked flawlessly. I supersized the drive using WINMFS. That went fine, too. Then I ran WDIDLE3 and disabled the timer. Then I used the /R function to check, and the timer was reported as disabled. So, I put the new drive in the Tivo, and it just kept rebooting. I realized that I was using WDIDLE3 version 1.0, so I got WDIDLE version 1.05 and put it on a floppy. I tried that using both the /D setting and the /S300 setting. With either setting, the Tivo keeps rebooting. I have upgraded six HD Tivos and several more Series 2 Tivos in the past, using 1.5 TB WD green drives, so I do have experience with WINMFS and WDIDLE3. Of course, this is a WD25EURS drive, not a WD20EURS drive. Using JMFS, with the WD25EURS drive, the expansion did report more than 2TB for those who were wondering. I think it said 2.19 TB. I just bought this drive about a month ago, so its manufacture date must be in 2011. Any ideas on the rebooting? PLEASE!!