Information recording medium, method and apparatus for recording and reproducing information

An information recording medium including:

• a lead-in area;
• a first lead-in information area located in the lead-in area;
• a second lead-in information area located in the lead-in area;
• and
• a data area for storing information in prescribed error correction block units;
• wherein the first lead-in information area is an area which is subjected to recording in the prescribed error correction block units and on which lead-in information containing manufacturing information is to be recorded;
• wherein an error correction ability in the prescribed error correction block units corresponds to an information amount of n bytes;
• and
• wherein the second lead-in information area is an area on which lead-in information containing manufacturing information is recorded, and the second lead-in information area includes pre-pits and has a boundary different from a boundary of an error correction block which occurs in cases where recording is done in the prescribed error correction block units, and the second lead-in information area includes a pre-pit area having information whose amount is greater than at least n bytes regarding the prescribed error correction block units.