Patent ID: 8397021

Claim:
A device for recording information on a multilayer optical storage medium, the device comprising: scanning means for scanning the multilayer optical storage medium for recording and retrieving data on a recording layer of the multilayer optical storage medium, said medium being in an unformatted state, interface means for receiving commands according to a protocol, the commands including a format command, and formatting means for formatting the multilayer optical storage medium according to the format command, the format command including a size parameter indicative of a format size, the formatting means: formatting the multilayer optical storage medium by recording, on each layer of the multilayer storage medium, a first control zone at a first radial position and a second control zone at a second radial position thereby forming an annular data zone between corresponding control zones, said annular data zone having a selected size, and positioning on each of the layers corresponding first and second control zones on substantially equal first and second radial positions forming corresponding annular data zones, wherein the radial positions of said first and second control zones are determined based on said selected size of a corresponding annular data zone, wherein the first control zones of each of the layers is written prior to writing said second control zones and the format size equals a sum of the sizes of each of the annular data zones.