Recording/reproducing apparatus, recording/reproducing method, and information storage medium therefor

摘要

A recording/reproducing apparatus and a method of easily managing a defect in a multi-layer information storage medium, and an information storage medium therefor. The information storage medium includes a user data area for recording user data, and a spare area for recording replacement data, which replaces a defective data block when a defect occurs in data recorded in the user data area, wherein the replacement data is recorded in the same recording layer that the defective data block is recorded.