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/* PC Floppy Drives */
=== 3.5inch PC diskette format ===
The IBM PS-/2 introduced two standard 3.5 inch diskette formats:
* The first is a double sided, double density, 80 cylinders, format yielding a capacity of 720KB. The double density drive rotates at 300 RPM.
* The other is double sided, quad density, 80 cylinders, with a total capacity of 1.44 MB. The high density drive rotates at 300 RPM.
