FIELD: optical environment for storage of information, and method for recording information on it.
SUBSTANCE: optical environment for storing information comprises injection section, user data section, wherein user data is recorded, and end section. Write protection information and defect control information, which denote whether or not it is possible to control a defect section, are recorded in at least one of injection sections and end sections, making it possible to realize selective control of defect section by using defect control information. User data zone comprises internal backup section and external backup section, which are meant for replacing defect section, and user data section, where user data is recorded. In case when it is possible to control defect section, the user data section is write-protected.
EFFECT: possible selective control of defects, including the case when optical environment is write-protected.
2 cl, 2 dwg
