If you are running Vista make sure you right click the WinMFS executable and choose "run as administrator". Even though my user account in Vista has administrator privelages when you run WinMFS it won't allow you to select a Tivo drive unless you run the executable expressly as the administrator account on the box. Make sure you don't mount the discs in Windows, that would be bad and would destroy the boot partition on the Tivo drive (which there is a tool to recover). I simply selected my Tivo drive as the "A" drive and did a direct copy to my other drive, no truncated backup. I copied all of my shows, etc, and it only took about 20 mins to complete. I also used the supersize option that Spike has created which has pushed me up to 70 hrs of HD recording on a 500GB drive. I just put the original Tivo drive in an anti-static bag and put it in my safe so I can use it again if I ever need to recover the original configuration. Takes up more physical space but I don't have to have to worry about losing the software backup. I believe it's been reported that USB enclosures will work, it will just take longer to run the tool. Definitely it's smart to get a drive like a Hitachi or WD that will allow you to turn on acoustic management. You just need to download the Hitachi Diagnostics ISO image and burn it to a disc or use the program Spike provides on the MFSLive bootable CD. I tested seek noise with acoustic management off and it was very noisy. With AM turned on to the 128 setting (maximum) you could barely tell the drive was running. Keep in mind that most of the drives we would consider installing run much hotter than the stock drive. I observed that the stock drive only hit about 33C on the drive exterior when it ran copying for 20 mins. The new Hitachi 500GB drive hit 44C (and probably would have gotten hotter with AM turned off). Make sure your Tivo is in a well ventilated area if you will update the drive, one user already reported that the Seagate 750GB drive he installed ran so hot it actually caused problems with the Tivo and he had to put the stock drive back in. Thanks again to Spike for providing such great tools!!!