FIELD: information technologies.
SUBSTANCE: method includes preparation of user data area, where user data is recorded and which has the first synchronising combinations, and also area of additional data arranged at least on one of areas before and after area of user data; and generation of the second synchronising combinations used in area of additional data, which differ from the first synchronising combinations used in area of user data.
EFFECT: improved efficiency of user data area separation from area of additional data.
13 cl, 4 dwg, 2 tbl
