Odds are, you will probably need a real map disk.

I was concerned about theft, so I tried to use a backup copy in my MKIV. I burned many copies of my map disk for my MKIV using different media, speeds, and copying programs. I never got a map disk copy that was stable 100% of the time. Life has been perfect since I just started using my original disk.

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SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input