hard sector
Computing term referring to a sector on a disk that is physically marked, as opposed to a soft sector defined by software.
フロッピーディスクにはハードセクター方式とソフトセクター方式がある。
Floppy disks come in hard-sectored and soft-sectored formats.
Variant with interpunct; less common in running text.
Borrowed from English 'hard sector'.