A method of teaching pronunciation is provided which includes communicating by a voice portal server to a user a model word and detecting a response by the user to the voice portal server. A CPU of a head positioning control system calculates a second position offset amount by correcting a first position offset amount corresponding to a rotation angle of an actuator on a disk medium based on a disk runout amount. The base cover may be attached to the base by snap means or by an interference fit for easy removal and reinstallation so that the base cover can be replaced when decorating to provide a color, style or textural change. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal. The second fixed part to which the harness is fixed and electrically connected is disposed within a battery upper surface area. These mechanisms and methods for saving multiple rows together can enable embodiments to detect faults in the save operation and recover.