Information recording medium, information recording device and method, and computer program

摘要

An information recording medium (100) is provided with: a record information area (106); an edge portion area (104,108,109) which is located in at least one edge of the record information area; and a flag area (121) to record therein a first pre-record flag for indicating whether or not predetermined information is pre-recorded in at least one portion of the edge portion area.