Computer system and device driver installation method

A computer system connected to a drive for reading a recording medium,

• the computer system comprising:
• a storage part for storing a first file management table that stores a record associating a device driver that can be installed in the computer system with identification information of a logic area in which the particular device driver is stored, for each device driver;
• a read part for reading a second file management table stored in a recording medium placed in the drive, storing a record associating a device driver necessary to install a given program with identification information of a logic area in which the particular device driver is stored, for each device driver;
• a generation part for generating a third table by inserting the record stored in the first management table into the read second management table, and by assigning a new value so that identification information of the device driver stored in the first file management table and identification information of the device driver stored in the second file management table are unique to each other;
• and
• an execution part for generating a virtual file management table that associates the third table with the device driver stored in the first table as well as the device driver stored in the second table, and searching for the device driver requested when the give program is installed, from the virtual file management table to install the requested device driver.