Abstract: A device and method are provided for preventing the damage of a disk by stopping the operation of a hard disk drive (HDD) if vibration is exerted on a hard-disk mobile communication terminal or free falling thereof occurs. The hard-disk mobile communication terminal stops the operation of a HDD by detecting the vibration and/or impact being exerted thereon through a sensor, if the exerted vibration and/or impact exceed a predetermined level. The hard-disk mobile communication terminal includes an impact detecting unit for outputting a HDD operation enable/disable signal that is the basis of decision of whether to operate the HDD according to the level of the impact exerted on the hard-disk mobile communication terminal, and a HDD operation control unit for deciding whether to operate the HDD according to the HDD operation enable/disable signal if access of the HDD is requested.