RECORDING DEVICE, INFORMATION RECORDING MEDIUM, METHOD OF CONTROLLING RECORDING DEVICE, CONTROL PROGRAM AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To shorten the time for identification of a recording layer.SOLUTION: An optical disk drive 1 records information on an optical disk 100 that includes a recording layer 101 and a guide layer 102. The optical disk drive 1 includes a layer identification information recording unit 25. When a record determination unit 21 determines that data is not recorded in a user data record area 101c, the layer identification information recording unit 25 writes layer identification information on the recording layer 101 having the user data record area 101c.