

When you insert a DVD that has a different region than the one the drive is set to, you get the dialog above.

You pretty much have two choices - either find the region code that you’ll be using the most and set it to that one (since the four times are going to be used up sooner or later) - or “flash” your drive to the region free, which goes with the risk of destroying the drive. From then on, this can only be changed four more times. On a new Mac, the DVD drive is automatically locked to the region code of the first DVD it is used with. Thanks to a stupid law, every DVD player (that includes the one in your computer) is sold being able to play only discs with the same region as the country it was sold in.
