Information record medium having a header having error correction code added for each block and a method for recording information on such a medium

The information record medium having information recorded in a plurality of blocks, wherein each of said blocks has a data field and a header field including information with regard to the block per se, the header field having an error correction code added thereto. The method for recording information comprising the steps of:     dividing data into a plurality of blocks per a predetermined information unit;     adding to each of the divided data blocks a header field including information concerning the block per se;     converting the header fields to information with error correction codes;     checking whether addition of an error correction code to the data block is required or not for each data block, and if required, converting the data to information with the error correction code; and     writing the data having the header fields added thereto onto an information record medium for each block.