Patent ID: 7196873

Claim:
A disk device that rotates a disk-like storage medium and accesses the storage medium, comprising: a slider that has an element for accessing the storage medium fixed thereto, floats over the storage medium by the action of an airflow caused by rotation of the storage medium and allows the element to access the storage medium, wherein the slider has a first rail located on an air inlet side and a second rail located on an air outlet side, the second rail on the air outlet side including an inner rail located on an inner side of the storage medium and an outer rail located on an outer side of the storage medium, and the inner rail has a first step part located on the air inlet side and a second step part located adjacent to the first step part on the air outlet side and having a height greater than that of the first step part, the first step part and the second step part being separated by a wall along a first segment extending from the inner side toward the outer side and a second segment extending from the outer-side end of the first segment toward the outer side with being slanted toward the air inlet side.