A disclosed file access system is capable of receiving each of code data from a server apparatus and updating a local file without increasing the processing time upon receiving the code data as the number of received code data is increased. The file access system includes a header data receiving unit receiving header data; a header data writing unit writing the header data into the local file; a code data receiving unit receiving designated code data from among the code data; a storage area allocating unit allocating a storage area with respect to the local file so that the code data receivedby the code data receiving unit can be written from the same starting position of the local file as that of the original file; and a code data writing unit writing each of the code data from the samestarting position of the local file.