Abstract: This document relates to a method of using a backup image of an optical disc. In an embodiment of this document, data of an optical disc inserted into an Optical Disc Drive (ODD), included in a disc drive integrated with a Solid State Drive (SSD), may be backed up in the SSD in the form of an image file, and access to the optical disc may be bypassed to the backup image file. Backing up the data and bypassing the access may be executed by an application program in the operating system of a host coupled to the disc drive. The application program may be automatically executed when the optical disc is inserted into the ODD or by manipulation of a predetermined button provided in the disc drive. Furthermore, the application program may set the backup image file of the SSD to a virtual drive for the optical disc.