Hard disk drive for controlling flying height of head and the method using the hard disk drive

The hard disk drive and a method for adjusting the magnetic head flying height is provided. The hard disk drive according to an embodiment of the present invention for achieving the technical problem is characterized in that the disc, provided with a magnetic head flying height maintaining member and a control member. The magnetic head reads or writes data to the disk, the data on the disk. The flying height maintaining unit controls to maintain a constant to change the flying height of the magnetic head on the disk. The controller of claim for performing the search mode, the FH of the magnetic head in the first disabling a holding height of the portion to maintain the height, the first height of the magnetic head in a write operation or read operation for a (seek mode) 2 higher than the height. The magnetic head hard disk drive and method for controlling the flying height is to minimize the mutual interference (Head Disc Interference) of the magnetic head and the disk according to the flying height reduction in magnetic head that can occur during the search mode by the degradation of the system blocking the writing and reading when there is an advantage in that performance degradation can increase the reliability of the system.