5.25 inch Floppy Disk

Also known as: 5¼ inch floppy diskette, 5.25 inch minifloppy, 5.25" floppy disk

Summary

Technology	magnetic disk
Dimensions	5.25 inches by 5.25 inches
Date introduced	1976
Storage Capacity	Single-sided, 8 sectors/track: 160 KB (1981) Single-sided, 9 sectors/track: 180 KB (1983) Double-sided: 360 KB (1983) High-Density (HD): 1.2 MB (1984) Note: dates are for IBM PC support. Other hardware supported these (and other capacities) earlier.
Created by	Shugart
Wikipedia	Floppy_disk
See also	Successor to the 8 inch floppy Succeeded by the 3.5 inch floppy