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What is Erasable Optical Disk?

By Ashutosh Bhatt October 5, 2011

An erasable optical disk is the one which can be erased and then loaded with new data content all over again. These generally come with a RW label. These are based on a technology popularly known as Magnetic Optical which involves the application of heat on a precise point on the disk surface and magnetizing it using a laser. Magnetizing alters the polarity of the point indicating data value ‘1’. Erasing too is achieved by heating it with a high energy laser to a certain critical level where the crystal polarity is reset to all 0’s.

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