To answer the previous question, yes you can make a backup of your copy of your ( NAV ) navigation dvd. I know some people are not big believers in backups, but if I am paying up to $300 for a disc, you better believe I want to have a secondary copy. You have to use DVD Decrypter in ISO read mode to make the copy and ISO write mode to burn it. Here is the key, though, you have to have a burner that supports BOOK TYPE burning and the book type has to be set to DVD-ROM. Also, you have to have a dual layer burner since the disc is about 8GB. If your burner does not support these, your backup will not work. DVD Decrypter only allows you to enable certain brand burners (NEC, Plextor, Lite-On, Pioneer, BenQ to name a few) for BOOK TYPE burning. Nero will also do book type, but the option only appears on burners that actually support it. If you are not sure what the heck I am referring to, do a google search on "book type nero burn" or "book type dvd decrypter burn."
