You have to have the right equipment… the version I have is GM Part Number 25847541. I have this DVD and was able to make a backup copy that works perfectly!
Basically you have to have a DVD recorder that supports writing the booktype to ROM. If it doesnt then you cant make a backup… I used NERO’s free version and it worked the first time on my computer but my laptop didnt work… I did some research on the DVD writers in both computers and it turns out the one in my laptop will not write booktype ROM.
Im sure this is the same with most the NAV DVD’s out there.
If you are making coasters its because your writer is not what you need… its as simple as that!
If you need help obtaining a working backup copy of the part number I have you can still PM me! I would like to obtain the latest GM part Number 25956245 Nav DVD. Anyone? Ill back it up for you? I do have the 08 version though if anyone is interested.