Patent ID: 6151181
Filing Date: 2000-11-21
Classification: G11B

Abstract:
A method of controlling a magnetic disk device havinga plurality of magnetic recording disk surfaces supported rotatably and storing discretely reproducible servo information,a plurality of magnetic heads for performing an information read/write operation for said plurality of respective magnetic recording disk surfaces,a rotary actuator for positioning one of said plurality of magnetic heads relative to one of said plurality of magnetic recording disk surfaces on the basis of embedded-servo information, anda controller for sending out a signal for selecting one of said plurality of magnetic heads and a signal commanding an information writing operation, the method comprising:a first step for reading a servo information from one of said plurality of magnetic recording disk surfaces;a second step for selecting a magnetic head from said plurality of magnetic heads;a third step for writing information once or more;a fourth step for selecting another magnetic head from said plurality of magnetic heads; anda fifth step for reading a second servo information adjacent to said servo information of the first step.