Patent ID: 7701815

Claim:
An information recording method for recording data on an additionally recordable information recording medium, which includes a user data area for recording a user data and a recorded-area-location storage area for storing a last recorded address indicating an address of a recorded area located at the rearmost location in the user data area, the information recording method comprising: a step of determining whether it is necessary to update the last recorded address or not; and a step of updating the last recorded address to an address of a rearmost area in the user data area, in which the user data is recorded, wherein in the event at least one unrecorded area is located in a forward direction from the last recorded address, the step of determining determines that it is not necessary to update the last recorded address if the user data is recorded in the at least one unrecorded area, and determines that it is necessary to update the last recorded address if the user data is recorded in an area rearwardly away from the last recorded address.