World's Largest Floppy Disk Drive. Engineers at Common Door, while working on the next version of the PIT computer, stumbled on a revolutionary principle. Cutting through the mathematical jargon and formulae, the breakthrough can be stated simply that a bigger disk holds more data..
http://www.swtpc.com/mholley/Creative_Computing/Large_Disk.htm
In 1973, IBM shipped its first read/write floppy disk drive, the 33FD, as a component of the 3740 Data Entry System, code named IGAR, designed to directly replace IBM's punched card (keypunch) data entry machines.
https://en.wikipedia.org/wiki/History_of_the_floppy_disk
Overview. 1  Differentiate between storage and memory. 2  Identify various types of storage media and storage devices. 3  Explain how a floppy disk stores data.  Identify the advantages of using high-capacity 1  disks. Describe how a hard disk organizes data.  Identify the advantages of using an Internet hard 1  drive. Explain how a compact disc stores  data.
http://uwf.edu/clemley/cgs1570W/notes/Concepts-7.htm
Sizes, performance and capacity. Main article: List of floppy disk formats. Floppy disk size is often referred to in inches, even in countries using metric and though the size is defined in metric. The ANSI specification of 3½-inch disks is entitled in part 90 mm (3.5 in) though 90 mm is closer to 3.54 inches.
https://en.wikipedia.org/wiki/Floppy_disk
Identify the advantages of using high-capacity disks. A high-capacity disk drive is a disk drive that uses disks with capacities of 100 MB and greater (remember, a typical floppy disk can store only up to 1.44 MB). High-capacity disks are used to store large graphics, audio, or video files and for backup.
http://uwf.edu/clemley/cgs1570W/notes/Concepts-7.htm
World's Largest Floppy Disk Drive. Engineers at Common Door, while working on the next version of the PIT computer, stumbled on a revolutionary principle. The engineers then set out to find out if there is an upper limit to this principle.
http://www.swtpc.com/mholley/Creative_Computing/Large_Disk.htm
Floppy disks are read and written by a floppy disk drive (FDD). Floppy disks, initially as 8-inch (200 mm) media and later in 5¼-inch (133 mm) and 3½-inch (90 mm) sizes, were a ubiquitous form of data storage and exchange from the mid-1970s into the mid-2000s.
https://en.wikipedia.org/wiki/Floppy_disk
Work on the drive for what became the media of the world's first floppy disk drive began in 1967 at a San Jose (CA) IBM facility. First introduced into the market as 8-inch floppy disks in 1972, they were followed by 5¼-inch disks in 1976 and 3½-inch disks in 1982.
https://en.wikipedia.org/wiki/History_of_the_floppy_disk
Answer: 8 Inches. The original floppy disk, a storage media made from a flexible and thin magnetic disk enclosed in a plastic wrapper, was invented in the late 1960s and produced commercially by IBM in 1971. The first disks were a whopping 8 inches across and stored 1.2 MB of data if optimally configured.
https://www.howtogeek.com/trivia/what-size-were-the-original-floppy-disks/
Alan Shugart left IBM and moved to Memorex where his team shipped the Memorex 650 in 1972, the first commercially available read-write floppy disk drive. The 650 had a data capacity of 175 kB, with 50 tracks, 8 sectors per track, and 448 bytes per sector.
https://en.wikipedia.org/wiki/History_of_the_floppy_disk
largest data capacity floppy disk
The  largest data capacity floppy disk is 1.44 MB. The largest data capacity floppy disk is 1.44 MB.