How to stop a file being copied from a dvd? talk to every major music and entertainment company who've been trying to find a way for years. Every time they think they have, someone finds a way around it. google for dvdjohn
How to stop files being copied to a DVD-RW so that the data on it doesnt get overwritten? Have you got software that will let you burn files as read only?
I cant see how youd be able to change the status of the disc from RW to R though (not going into that here). Obviously youve considered using a DVD-R instead?