FIELD: information technology.
SUBSTANCE: data medium includes an information control area and a user data area. At least one writing session has such a configuration that it contains at least one of at the at least one writing area. Control information contains identification information on the writing interval and information for identifying the writing area lying on the session boundary. Information on the interval contains information on the start position and the last written position of the writing area.
EFFECT: less information for identifying the session boundary.
3 cl, 25 dwg
