I want to clone my time machine backup history over to a larger external drive and when I found this product I thought that I was all set. I downloaded the program, which has a 6-day free trial, and followed the instructions for cloning. The only problem is that, after selecting the drive containing the time machine backups, the "clone" button shown in the review, and in the program Help topics, is not present on the screen--so I was unable to clone the drive. For my purposes, this app is worthless.