A disk drive having a body including: a spindle motor for rotating a disk; a pickup unit for accessing the disk; a tray for accommodating the disk, which retracts and extends from the body; and a front panel assembly mounted on the body, which allows the tray to retract and extend. The front panel assembly has a front panel with an entrance, through which the tray retracts and extends, a door rotationally assembled with the front panel to open and close the entrance in connection with movements of the tray, an elastic member that provides an elastic force to the door in the direction of closing the entrance, a door locking apparatus that selectively allows and prevents the rotation of the door in connection with the movements of the tray. Accordingly, it is possible to prevent the door from opening while the tray is in a retracted state.