Rich, Check out this site. http://www.digit-life.com/articles/pioneerdvr104/index.html I have the DVR-105 and it doesn't read DVD+R discs. However it does read all DVDs that I rent at the video store and I am under the belief that they are all DVD+Rs. So I suspect that only commercial discs of this type can be read and not the blank discs that we use to do our backups, etc.. Possibly, I am mistaken. Bill