Recovering word documents

I have some CD-R's that I wish to discard.I have reformatted them in order to make an easy recovery by another person more difficult.I thought I would try Recuva to see how easy it might be to recover the document.When I run the wizard,and go to Browse in order to enter D,dvd drive, it gives me the list of drives.I highlight the D drive and it just stays on C drive.I have tried other CD's and my other dvd drive E with no joy.Will Recuva recover data from a dvd or cd drive or am I doing something wrong? Thanking You in anticipation of a answer to my problem.

CDs are not a recoverable media afaik

They can be, but not with Recuva. I'm not sure how you can reformat a CD-R.