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hard-sectoring

Hard sectoring is a relic of floppy disks. Here a small punched out hole in the floppy disk and in the floppy disk case provided the initial marking of the sectors

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5 1/4-inch floppy disk with marking hole for hard sectoring

5 1/4-inch floppy disk with marking hole for hard sectoring

When the floppy disk was rotated, the punched-out hole for hard sectoring was detected by an optical device that had the function of a light barrier and generated a corresponding reference signal. All sectors referred to this signal. The hard sectoring technique is no longer used today. Today's media, hard disks, DVDs and floppy disks are soft-sectored, i.e. magnetic. The earlier 8" floppy disks had a whole row of index holes on their periphery.

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Englisch: hard-sectoring
Updated at: 27.02.2016
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Translations: DE