Information storage medium and method and apparatus for recording/reproducing data on/from the same

摘要

An information storage medium (D) on which data is recorded after performing optimum power control (OPC) and a method and apparatus to record/reproduce data on/from the information storage medium, wherein the recordable information storage medium has a plurality of recording layers (L0,L1) and a pickup irradiates a beam onto the information storage medium, utilize operations of: recording data on at least a portion (21a, 21'b) of a recording layer through which a test beam to find an optimum recording power passes before performing optimum power control (OPC) on a desired recording layer and performing OPC on the desired recording layer. The method and apparatus allow data to be recorded after performing a test to determine an optimum recording power, thus providing effective recording/reproducing quality.