Access protection from unauthorized use of memory medium with storage of identifier unique to memory medium in data storage device

A data storage device which reads data from and/or writes data to a memory medium by designating first address information, comprising:

• a storage unit for storing a first identifier previously recorded by said storage device itself;
• an identifier acquisition unit for acquiring a second identifier in a first area of said memory medium, said second identifier identifying said memory medium as a unique medium, said memory medium being set to said data storage device;
• an address information acquisition unit for acquiring second address information recorded in said memory medium;
• and
• a controller for comparing said first identifier with said second identifier and said first address information with said second address information, and controlling to access to said memory medium for data reading and/or writing according to a second area of a relationship between said first identifier and said second identifier and a relationship between said first address information and said second address information,
• wherein said data storage device reads said second identifier directly from the first area of said memory medium and records said second identifier to said storage unit as said first identifier.

A method for controlling a data storage device which reads data from and/or writes data to a memory medium, comprising the steps of:

• acquiring a first identifier stored in said data storage device, said first identifier being previously recorded by said data storage device;
• acquiring a first identifier on a first area of said memory medium, said second identifier identifying said memory medium as a unique medium, said memory medium being set to said data storage device;
• comparing said first identifier with said second identifier;
• and
• controlling to access to a second area of said memory medium for reading of data and/or writing of data according to a relationship between said first identifier and said second identifier;
• wherein said data storage device reads said second identifier directly from the first area of said memory medium and records said second identifier to said storage unit as said first identifier.