RECORDING APPARATUS, RECORDING METHOD, AND INFORMATION RECORDING MEDIUM

摘要

A recording apparatus including a unit that records data and/or reads data from a medium including a lead-in area, a data area having a user data area where user data is recorded and a spare where replacement data for updating the user data is recorded, and a lead-out area; and a controller that controls the unit to record the replacement data in the spare area according to a replacement enforcement write command received from a host that instructs the recording of replacement data in the spare area.