Provided is a method of manufacturing a form factor disk such as an optical or magnetic disk for use in electronic appliances and information appliances. The method includes forming a hub for readily mounting the disk to a magnetic rotational disk connected to a spindle motor of the information appliances by depositing or plating a magnetic material, whereby it is possible to minimize a thickness of the disk, simplifying a manufacturing process, allowing an ultra-small and ultra-slim form factor disk to be manufactured, and therefore, facilitating ultra-minimization and ultra-slim of the information appliances.