Patent ID: 7224649

Claim:
An information recording and reproduction apparatus comprising: a recording and reproduction section configured to record and reproduce information in and from one recording medium of a first group and one recording medium of a second group that has a smaller recording capacity than said one recording medium of the first group; and a registering section configured to reserve, in said one recording medium of the first group, a recording region which corresponds to the recording capacity of said one recording medium of the second group, the registering section comprising: a selecting unit configured to select the type of one recording medium of the second group; an input unit configured to input the number of recording regions to be reserved in one recording medium of the first group, each corresponding to the recording capacity of one recording medium of the second group; and a setting unit configured to reserve, in the recording region of said one recording medium of the first group, a number of recording regions, each corresponding to the recording capacity of said one recording medium of the second group and the type selected by the selecting unit, said number having been input by the input unit.