A floppy disk is a disk storage medium composed of thin and flexible magnetic storage medium encased in a rectangular plastic carrier. It can be read and written using a floppy disk drive. Floppy disks were the almost universal data format from the 1970s into the 1990s, used for primary data storage, backup and data transfers between computers. Floppy disks became increasingly rare in the 2000s and slowly became obsolete.
