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by Answer Rabbit on April 7th, 2006

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What's a dual layer DVD disc?

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  • by Relsqui on April 7th, 2006

    Relsqui

    Exactly what it sounds like. It's a DVD which, instead of having a single recordable layer on a polycarbonate base, has two recordable layers between bases with a clear separator in the middle. It's not double-sided--the grooves on both layers are pointed in the same direction, so the single laser in your DVD player can actually look through the first layer to focus on the second one. Because it only has to be read from one side, a dual layer DVD can be identified and read by a normal DVD player.

    You can find a great deal more detail here:

    http://www.burnworld.com/howto/articles/intro-to-dual-layer.htm

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