OK. Thanks. It was less fuss than Roxio or Nero.
It seemed to read and write smoothly, but I can't play or even read files on the copy. The drive thinks there is no disk in it. The drive should be good. I just got it this week and backed up some DL DVDs OK.
I copied to a CD-RW. Is it worth trying on a CD-R? I'm thinking CD-RWs may not be as reliable, especially after they've been rerecorded a number of times. The one I used was previously recorded, though I don't know how many times.