| 摘要 |
<p>PURPOSE:To promote a recording density and also to enable write by providing a guard band between a read only track region and a write-enable track region and evading a miswrite into the write only track at the time of write. CONSTITUTION:The guard band GB (W) having an enough width to be capable of evading a miswrite into the read region AR (R) is provided between the read only track region AR (R) and the write-enable track region AR (W/R) on a magnetic disk 21. Thus, because of the read only track region AR (R) being provided, a track position error can be minimized, so that a track pitch can hence be narrowed. In addition, because of the write-enable track region AR (W/R) being provided, data cannot be written. Furthermore, it is not feared that the read region is erased by the wide guard band GB (W), so that the recording density is promoted and also the write is feasible.</p> |
