A high density optical disc and a method for creating and reproducing a file system of the same are disclosed. In recording a file system information on an optical disc, the method for creating a file system of a high density optical disc includes recording a main volume descriptor sequence and a reserve volume descriptor sequence, wherein each of the main volume descriptor sequence and the reserve volume descriptor sequence is recorded in a different ECC block. Accordingly, a highly reliable file system information may be provided. Furthermore, by using the newly created file system information, the optical disc may be reproduced with more efficiency