FILING SYSTEM

PROBLEM TO BE SOLVED: To provide a filing system and a data recording method capable of recording files at high speed. SOLUTION: An FAT containing the data location information of a file on a PC card 6 is accessed, continuous empty clusters exceeding a prescribed number are retrieved from addresses thereof, and the group of clusters succeeding by the prescribed number is prepared while being made into table 8a on a RAM 8 together with the start address thereof. When actually recording image data, while referring to the table 8a, the starting position of the first cluster group is accessed and by continuously recording the image data in that cluster group, the data can be recorded in a short time rather than the case of recording for each cluster.