I used a program called winmfs and made a backup of all my old drives then popped in the new drive and did a restore of my backup and it only took about a minute and it keeps all your settings and current software version but does not copy your recordings. However there is an option to copy your recordings with this software if you so choose. if you need any help with this software let me know, you can find it with a google search. Make sure your using windows Xp service pack 2 or later before you hook up any tivo drives to your computer or windows will write something on the drives that make them not work with tivo. The drives I used were clean..