Methods and apparatuses are disclosed for fabricating an electronic device with an integrated railing system that detachably couples mounting hardware to the electronic device. It includes a Field Programmable Gate Array for outputting a timing control signal, an oscillation section for generating a reference clock pulse for the FPGA, and an input selection section for selecting a resolution or a color pattern of an input image of a monitor. The apparatus combines two systems, power assisted roller stretch and roller stretch to vary the supply rate of the packaging material as the demand rate varies. The control unit controls the hooks to enter and hitch one part of the assembled product to correct a gap therein. The method for assuming a spare area in a storage medium that can have two types of spare areas includes assigning an inner spare area to a size, and assigning an outer spare area to a variable size within a predetermined maximum allowable size, wherein the assigned variable size of the outer spare area is a multiple of a minimum unit.