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Originally Posted by nowa
When I used my original navigation DVD I didn't have any problems, or at least I didn't notice any, then, when I recorded a disc, the lock-ups started.
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The difference in level of optical signal reflected from a burnt disc compared to an original disc is huge.
The original disc reflects much more light, because the reflective coating is much much better (almost perfect).
Thus an original disc is ALWAYS easier for the laser to read.
If you use recordable media, the quality of the reflected signal varies a lot between media. Some work well, some are terrible.
If your current brand of media is not working well, try switching to another brand.
The well known expensive brands are not always the best!
Of course, BMW always request you to use original BMW discs, never copies.