An apparatus to accommodate and load a disc cartridge in a drive includes a tray on which the disc cartridge is accommodated, a locking lever having a locking hook caught in a groove formed at a side wall of the disc cartridge when accommodated on the tray and which restricts/releases the disc cartridge using the locking hook. A sliding holder is slidably installed at the tray to prevent the disc cartridge from moving by pressing the disc cartridge restricted by the locking lever in one direction.