What are diskettes?

A diskette is a removable storage device that is used in a floppy disk drive. It contains a plastic rotating disk, it is inside a shell. There were 2 main varieties, the 5.25 inch floppy and the 3.5 inch floppy. The 5.25" diskette truly was floppy. The disk is soft and inside a flexible shell, and you had to take care to never bend it. The 3.25" floppy was actually hard. The platter was more rigid and it was in a hard plastic shell.