| 摘要 |
According to one embodiment, a magnetic disk apparatus includes a patterned disk, a slider, two read heads, a write head, and a drive circuit. The patterned disk has a magnetic recording surface on which bit patterns are arranged concentrically. The slider is located near the magnetic recording surface, and moves relatively to the magnetic recording surface. The read heads are arranged along a medium running direction at an end of the slider, and read magnetic data from the magnetic recording surface. The write head is located between the read heads, and records magnetic data to the bit patterns. The drive circuit drives the write head at a timing based on a period from when one of the read heads located upstream in the medium running direction reads magnetic data until the other located downstream reads the magnetic data at the same position on the magnetic recording surface. |
