Research the title ISOBUSTER. Some have used that to peek at the unfinalized media to copy out what's there.
Bob
We have several dvd-r discs that are unviewable on our computer and dvd player because they were not finalized on the old Hitachi DVD camcorder we had. The camcorder no longer works. How can I finalize these discs to get our home movies off of them. What kind of software could I download or buy to do this? Someone suggested ripping the files off of the disc, but the computer will not even acknowledge that there are files on these discs. I would appreciate any help or advice. Trying to do this as cost effectively as possible. Thanks!

Chowhound
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GameFAQs
GameSpot
Giant Bomb
TechRepublic