| 摘要 |
This invention provides a magnetic disk and a magnetic disk device having the magnetic disk, which is capable of suppressing the floating variation of the head slider on the magnetic disk. The magnetic disk, in which the circumferential length of the control signal recording zone has a value not exceeding the length +E,fra 3/10+EE times that of the head slider, in which the ratio of the depth of groove on the data recording zone and the depth of groove on the control signal recording zone is 0.2 or larger and 4.7 or smaller, in which the train of the control signal recording zones are entirely or partially provided on each projected length of the head slider, which is structured so that the step difference of the land groove does not exceed 320 nm, which is provided with the land for recording data and the groove for rendering dynamic pressure to the head slider for floating just above the groove, or in which the load capacity of the head slider on the data recording zone is equal to the load capacity of the head slider on the control signal recording zone.
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