Magnetic storage device and method of correcting magnetic head position
A head position is corrected based on track deviation information read from a storage unit that stores the information on track deviation due to an abnormal pitch of a servo track. At the time of writing data, a track on which a read head R is to be positioned, which is determined based on correction of core deviation of a write head, is further corrected based on correction of track deviation information.
1 . A magnetic storage device comprising:
a magnetic storage medium on which a servo track is formed;
a head having a read head and a write head;
a head moving unit that moves the head; and
a storage unit that stores information of track deviation due to an abnormal pitch of the servo track, wherein
a position of the head is corrected based on track deviation information that is read out from the storage unit.
2 . The magnetic storage device according to claim 1 , wherein
the storage unit is a nonvolatile memory or a system region of the magnetic storage medium.
3 . The magnetic storage device according to claim 1 , wherein
the track deviation information is stored in a table in which a track address, track deviation, and a group number of a group of continuous track deviation are related to each other.
4 . The magnetic storage device according to any one of claim 1 , wherein
the correction of the head position includes correction of core deviation information based on the track deviation information.
5 . A method of correcting a magnetic head position, comprising:
storing information of track deviation due to an abnormal track pitch; and
correcting a position of a read head that should be positioned on a track using the stored track deviation information.