IBM Floppy Disk Patent 1972 Anniversary: From 80KB to Modern Storage

The anniversary of the original floppy disk patent marks a milestone in computing history. IBM received U.S. Patent 3668658A for the technology on this day in 1972. The invention established the foundation for decades of removable magnetic storage.

Tracing the evolution of removable magnetic storage from its 1972 origins.

IBM began manufacturing the first eight-inch floppy disks in 1971. These initial drives stored just 80KB of data. The project started earlier under the name Project Minnow, which proposed using flexible Mylar disks during development in 1967.

The format evolved quickly to meet growing storage demands. Five-point-two-inch drives arrived with the Apple II in 1977 and handled up to 140KB per disk. IBM later released high-density versions of these smaller disks in 1984, boosting capacity to 1.2MB.

The technology eventually faded from mainstream computers as digital distribution rose. Apple removed built-in floppy drives from the iMac in 1998. This hardware shift signaled the end of an era for physical media in personal computing.

Floppy disks remain a nostalgic symbol of early data portability. The original patent granted in 1972 protected a design that became ubiquitous across industries. Contemporary data management utilizes flash memory systems and remote computing platforms rather than magnetic media.