Terminology as used in CONFIGURING a drive in CMOS Setup

CYLINDERS
Like tracks, the number of concentric cylinders upon which data is recorded, typically 300 to 3000.

SECTORS
Number of pie shaped wedges each track is divided into typically 8 to 64.

HEADS
Number of sides of magnetic material available to record on and hence number of read/write heads in the disk drive typically 2 to 256.

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