Huh... Here's the fascinating part. It acknowledges blank DVDs. After that I popped in the movie I watched before and it acknowledges that. I thought it might be that it just doesn't like OSs, so I tried a data DVD I burned a long time ago, but that wasn't acknowledged. The data was burned by a different computer, so I know it's not just that it doesn't like the DVDs that it itself creates.
So... I guess I need to ask: What's the difference between a blank or commercial movie DVD and a burned data or ISO DVD?
EDIT: sorry I realized I didn't answer you question. Yes it can still burn DVDs