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A comment on How did MS-DOS decide on two seconds to keep the floppy disk cache valid?. Parent comment

Re:How did MS-DOS decide on two seconds to keep the floppy d... by rasz on Tuesday September 24, 2019 @03:50PM (#21063890)
There is no calibration in floppies (and very old hard drives), track location is hardcoded in hardware and selected with stepper motor.
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Re:How did MS-DOS decide on two seconds to keep the floppy d... by kevin_thibedeau on Tuesday September 24, 2019 @04:51PM (#21064498)
Hard-sectored 8" and 5.25" floppies did exist.
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