A recording and/or reproducing method for a record medium, comprising the steps
of reading address information from a record medium, the record medium having at
least a first area and a second area, data being recordable to the first area,
the second area being followed by the first area, the address information representing
the position of the second area, detecting an error corresponding to error detection
code encoded for the address information that has been read from the record medium,
and when the result of the detecting step represents that an error has been detected
in the address information that has been read from the record medium, notifying
at least a user that the error has been detected.