A recording and reproducing method for a record medium including the steps
of reading type information from the record medium when data is recorded
to or reproduced from the record medium on which the type information is
recorded; reading type information from a recording and reproducing
apparatus for the record medium; comparing the type information read from
the record medium with the type information read from the apparatus; and
performing a recording or reproducing process for the record medium using
information corresponding to the type information stored in the apparatus
when the type information read from the record medium matches the type
information read from the apparatus.