PCs used two types of floppy disks. The first was the 5.25" floppy (diskette), which became ubiquitous in the 1980s. It was superseded by the 3.5" floppy in the mid-1990s. Very bendable in its plastic ...

A method for converting a single-sided 5.25" floppy disk into a double-sided disk. By punching a second notch in the jacket, the disk could be flipped over and inserted upside down. This was a poor ...