Patent ID: 7948859

Claim:
An information recording medium comprising: a first pre-recording area, in which reproducible preformed information including physical address information is recorded in advance and in which preformed address information assigned in advance is not recorded; a second pre-recording area, which is adjacent to said first pre-recording area and in which each of the preformed address information and unreproducible preformed information is recorded in advance; a first recording area, which is adjacent to said second pre-recording area and in which first record information is recorded and which is reproduced by an information reproducing apparatus in reproduction, the first record information including physical address information which can be reproduced by said information reproducing apparatus; and a second recording area, which is adjacent to said first recording area and in which predetermined second record information is recorded, wherein said first pre-recording area and said second pre-recording area are an initial zone in a lead-in area, said first recording area is a buffer zone in the lead-in area, and said second recording area is a physical format information zone in the lead-in area.