Updating optical disk storage

This program will automatically update your drive's firmware.

In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc which encodes binary data (bits) in the form of pits (binary value of 0 or off, due to lack of reflection when read) and lands (binary value of 1 or on, due to a reflection when read) on a special material (often aluminium ) on one of its flat surfaces.

Blu-ray discs, which are the newest type of optical media, can store up to 50 GB of data.

This storage capacity is a clear advantage over the floppy disk storage media (a magnetic media), which only has a capacity of 1.44 MB.

A typical disc is about 1.2 mm (0.05 in) thick, while the track pitch (distance from the center of one track to the center of the next) ranges from 1.6 µm (for CDs) to 320 nm (for Blu-ray discs). Write-once optical discs commonly have an organic dye recording layer between the substrate and the reflective layer.

An optical disc is designed to support one of three recording types: read-only (e.g.: CD and CD-ROM), recordable (write-once, e.g. Rewritable discs typically contain an alloy recording layer composed of a phase change material, most often Ag In Sb Te, an alloy of silver, indium, antimony, and tellurium.