And that's exactly what my answer was refering to. For mac dvdbackup will decipher all security on the disk to allow you to make a copy to your HDD. I then use another utility to reduce the size to dvd5 format size (4.37 GB.) And for windows there's equivalent apps.
http://www.videohelp.com/tools & the other dvd link I gave you. You just need to look thru.
By the way please keep all replies to the one thread by using the Reply button (NOT the New Thread button.)