Patent ID: 8218417

Claim:
A recording/reproducing method comprising: flexibly allocating a first flexible dedicated area part, according to a capacity of data to be recorded on an information storage medium, and a first data area, to a first recording layer of the information storage medium comprising a first fixed dedicated area part; flexibly allocating a second flexible dedicated area part, according to the capacity of the data to be recorded on the information storage medium, and a second data area, to a second recording layer of the information storage medium comprising a second fixed dedicated area part; and recording the data on the information storage medium and/or reading the data from the information storage medium, wherein the second fixed dedicated area part comprises a second middle area, a second dedicated area, a second buffer area and a second unused area corresponding to a first dedicated area of the first recording layer, wherein the first fixed dedicated area part comprises a first middle area of which a start position is fixed, a first unused area corresponding to the second dedicated area, a first buffer area and the first dedicated area, wherein the second flexible dedicated area part comprises a fourth middle area, a fifth dedicated area, a fifth buffer area and a fourth unused area corresponding to a fourth dedicated area of the first recording layer, and wherein the first flexible dedicated area part comprises a third middle area of which a start position is flexible according to the capacity of data to be recorded on an information storage medium, a third unused area corresponding to the fifth dedicated area, a fourth buffer area and the fourth dedicated area.