Bad sectors are parts of a disk that cannot be read. Bad sectors on a DVD are sometimes caused by scratches. Bad sectors sometimes are inserted in DVDs to inhibit people from copying them. Cleaning a DVD can get rid of bad sectors and certain DVD copying programs can copy DVDs with bad sectors.
Clean the scratches on the DVD. Scratches on a DVD often cause bad sectors and make the DVD difficult to copy. If the DVD is scratched, wipe it with a microfiber cloth. To clean it more thoroughly, use rubbing alcohol or window cleaner or a DVD cleaning kit.
Use DVD Decrypter. DVD Decrypter ignores bad sectors while it makes DVD copies. Download DVD Decrypter from the Internet and install it on your computer. Place the DVD with bad sectors in the DVD drive and open DVD Decrypyer. Click "Tools," then "Settings" then click the "I/O" tab. Under "Options," check the box under "Ignore Read Errors," then click "OK." Click "Mode," scroll over "ISO" and click "Read." Click the "Decrypt" button at the bottom-left corner. DVD Decrypter will then create an ISO image copy of the DVD and skip over the bad sectors.
Use AnyDVD. Bad sectors are inserted into certain DVDs a as a form of copy protection. AnyDVD bypasses bad sectors and allows you to copy DVDs with copy protection. Download the AnyDVD program from the AnyDVD website and install the program on your computer. Open the program and place a copy-protected DVD into your computer's DVD drive. AnyDVD will automatically detect the DVD and bypass the copy protection. Use a program such as Nero or Clone DVD to create a copy of the DVD with bad sectors while AnyDVD is running.
Do not copy a copy-protected DVD that you do not own.