List of Floppy Disk Formats - Physical Composition

Physical Composition

Floppy disk physical characteristics
(capacity and tracks are nominal, per side)
Size Density Tracks TPI BPI Coercivity Unformatted capacity per side
3½ in single 40 67.5 600 Oe 250 KB
double 80 135 8.717 600 Oe (300 Oe) 500 KB
high 80 135 17.434 750 Oe (600 Oe) 1000 KB
extended 80 135 900 Oe 2000 KB
5¼ in single/double 40 48 5.876 300 Oe 250 KB
quad 80 96 5.876 300 Oe 500 KB
high 80 96 8.646 600 Oe 750 KB
8 in single/double 77 48 300 Oe 1000 KB

Read more about this topic:  List Of Floppy Disk Formats

Famous quotes containing the words physical and/or composition:

    There are two kinds of timidity—timidity of mind, and timidity of the nerves; physical timidity, and moral timidity. Each is independent of the other. The body may be frightened and quake while the mind remains calm and bold, and vice versë. This is the key to many eccentricities of conduct. When both kinds meet in the same man he will be good for nothing all his life.
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