I have MyBook Essential (for only about 5 days) and would also like to know the identity of the backed up files. For example I have about 3MB of movies. I didn’t know I had any movies - anywhere. Where would they be located? What are the names of the files in “Documents”? There is about 1.6 GB in “Other”. What do they consist of? I also have 124 MB of music I didn’t know I had. It might then be possible to determine what has not been backed up and what has not.
I found the answer to identifying my backed up files. Found them all. Problem solved.
What was the solution? I’m having the same problem.
I got it by clicking on “retrieve” and at the bottom right clicked on “select files”. I didn’t want to retrieve any so I just made a note of the contents.