A mounting apparatus for securing a storage device (50) with a mounting hole (522) defined therein includes a bracket (20) for receiving the storage device, an operating member (40), a fastening member (30) and a resilient member (60) compressed by the fastening member. A through opening (248) is defined in the bracket. The operating member movably engages with the bracket includes a pressing portion. The fastening member pivotably attaches to the bracket includes a locking portion. The locking portion extends through the through opening of the bracket and engages in the mounting hole of the storage device under the pressure of the pressing portion of the operating member. When the operating member is pulled off, the resilient member rebounds to rotate the locking portion, thereby disengaging the locking portion from the mounting hole of the storage device.