Information recording/reproducing apparatus and method, recording medium and information recording medium with recording/reproducing control program

摘要

A system controller is provided so as to record the second disk type information (9) having the same content as that of the first disk type information, which is recorded in a DVD-R in advance, in a DVD-R in which the first disk type information is recorded as well as to record the record information in the DVD-R and reproduce the record information only if the first disk type information and the second disk type information have the same content each other upon reproducing the record information.