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Cylinder-head-sector : ウィキペディア英語版 | Cylinder-head-sector
Cylinder-head-sector, also known as CHS, is an early method for giving addresses to each physical block of data on a hard disk drive. In the case of ''floppy'' drives, for which the same exact ''diskette'' medium can be truly ''low-level formatted'' to different capacities, this is still true. Though CHS values no longer have a direct physical relationship to the data stored on modern storage media except for floppy disks, virtual CHS values (which can be ''translated'' by disk electronics or software) are still being used by many utility programs and file systems. ==Definitions==
CHS addressing is the process of identifying individual sectors on a disk by their position in a track, where the track is determined by the head and cylinder numbers. The terms are explained bottom up, for disk addressing the ''sector'' is the smallest unit. Disk controllers can introduce address translations to map logical to physical positions, e.g., zone bit recording stores fewer sectors in shorter (inner) tracks, physical disk formats are not necessarily cylindrical, and sector numbers in a track can be skewed.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Cylinder-head-sector」の詳細全文を読む
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