The original floppy disk was floppy and flimsy in texture. During the evolution of the floppy disk, they went from 80 kilobytes of storage up to 2880 kilobytes of storage (2.88 megabytes). The most known floppy drives are the 5 1/4-inch 720 kilobyte disk and the 3 1/2-inch 1.44 megabyte disk.