A method for accessing a semiconductor storage device, wherein the method comprises: resetting the semiconductor storage device; coupling the semiconductor storage device to a host computer as a predetermined device type; and detecting in the semiconductor storage device whether an AutoRun configuration file is present in a storage space of the semiconductor storage device; if the AutoRun configuration file is present in a storage space of the semiconductor storage device, the host computer: accesses the semiconductor storage device as an optical disk with the AutoRun procedure; searches for the AutoRun configuration file stored in the semiconductor storage device which simulates an optical disk drive to execute a specific file directed by the AutoRun configuration file; resets the semiconductor storage device; sends an inquiry command for detecting the type of the semiconductor storage device; performs a corresponding configuration based on a reply from the semiconductor storage device indicating that the semiconductor storage device is a conventional storage device; and performs a conventional storage operation on the semiconductor storage device; if the AutoRun configuration file is not present in a storage space of the semiconductor storage device, the host computer accesses the semiconductor storage device as the semiconductor storage device with the storage function. resetting the semiconductor storage device; coupling the semiconductor storage device to a host computer as a predetermined device type; and detecting in the semiconductor storage device whether an AutoRun configuration file is present in a storage space of the semiconductor storage device; if the AutoRun configuration file is present in a storage space of the semiconductor storage device, the host computer: accesses the semiconductor storage device as an optical disk with the AutoRun procedure; searches for the AutoRun configuration file stored in the semiconductor storage device which simulates an optical disk drive to execute a specific file directed by the AutoRun configuration file; resets the semiconductor storage device; sends an inquiry command for detecting the type of the semiconductor storage device; performs a corresponding configuration based on a reply from the semiconductor storage device indicating that the semiconductor storage device is a conventional storage device; and performs a conventional storage operation on the semiconductor storage device; accesses the semiconductor storage device as an optical disk with the AutoRun procedure; searches for the AutoRun configuration file stored in the semiconductor storage device which simulates an optical disk drive to execute a specific file directed by the AutoRun configuration file; resets the semiconductor storage device; sends an inquiry command for detecting the type of the semiconductor storage device; performs a corresponding configuration based on a reply from the semiconductor storage device indicating that the semiconductor storage device is a conventional storage device; and performs a conventional storage operation on the semiconductor storage device; if the AutoRun configuration file is not present in a storage space of the semiconductor storage device, the host computer accesses the semiconductor storage device as the semiconductor storage device with the storage function. <EOS>