The record medium is installed in an electronic product and has memory space with a preset capacity to record many kinds of data. The virtual partition method of the record medium includes first setting several virtual planning areas, each of which has only name established and no preset memory space, corresponding to different users in the said memory space; and then storing data in every virtual planning area, which the data being stored in the blank sector of the memory space while establishing in the virtual planning area one position record list to point at corresponding sector position with stored data. |