Magnetic recording medium formatted with ROM and RAM regions

A magnetic recording apparatus comprising:

• a magnetic recording medium that comprises:
• a servo region configured to provide positional read/write head data associated with alignment of the read/write head;
• a RAM region including a plurality of first tracks having a first magnetic portion, the first magnetic portions in adjacent tracks being physically separated by nonmagnetic portions from each other;
• a ROM region including a plurality of second tracks having a second magnetic portion, a width of the second magnetic portions in a direction perpendicular to a track direction of the first tracks being larger than that of the first magnetic portions in the perpendicular direction, the ROM region being initialized by applying a magnetic field so as to align a magnetization direction of the second magnetic portion in a given direction with respect to a direction of the second track;
• said RAM region and said ROM region separated from the servo region;
• and
• said read/write head that is movable relative to the magnetic recording medium, records information into the magnetic recording medium, and reproduces the information recorded in the magnetic recording medium,
• wherein a width of the first tracks in the perpendicular direction is equal to that of the second tracks in the perpendicular direction,
• wherein, in the ROM region, the second magnetic portions are intermittently arranged along the track direction, and
• wherein, in the ROM region, all the second magnetic portions are magnetized in the same direction.