Just wanted to report that I successfully upgraded my Tivo HD using the WD10EADS drive. The instructions were perfect and exact. Thanks OP. I had two USB2/SATA enclosures for the transfer. Didnt bother doing the backup, but it still took about 3 hours and 45 minutes. Also, went to set the AAM option using HDDScan. Curious, I checked the drive's information via Identity Info and said AAM was already Enabled, but the current value was still 254. Decided not to change the value for now to see if drive works quiet enough without changing the value. Update: drive is pretty quiet even without changing setting.