| 摘要 |
In a self-servo writing mode, parameters such as a moving amount of a head, a time delay and the like are measured and detected by using preservo information recorded beforehand on, for instance, an outermost periphery of a disk. In accordance with the detected parameters, the head is positioned in a predetermined radial position on the disk and virtual servo information and servo information are written. Then, in accordance with at least either the virtual servo information or the servo information, the head is positioned in a next predetermined radial position and the virtual servo information and the servo information are written. After writing on a full surface of the disk is completed, a normal mode is switched ON and writing/reading of data via the head can be performed.
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