Note: Commercially available DVD videos and DVD-ROMs cannot be copied as they are copy-protected. This symptom is different from the results of a copy-protected media.
If the media different from the source media is used to back up the data on it, the backup cannot be executed normally. Please use the same type and size (or larger size) of media as the source.
If backup is done using a DVD-RW or a DVD+RW but the data cannot be read, start Erase RW disc of Drag'n Drop CD + DVD. The media can be used again.
However for DVD-R, it cannot be used again.