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{"id":1498,"date":"2020-06-18T08:53:13","date_gmt":"2020-06-17T23:53:13","guid":{"rendered":"https:\/\/itenterpriser.com\/?p=1498"},"modified":"2020-10-18T12:10:52","modified_gmt":"2020-10-18T03:10:52","slug":"a-history-of-the-floppy-disk","status":"publish","type":"post","link":"https:\/\/itenterpriser.com\/knowledge-base\/a-history-of-the-floppy-disk\/","title":{"rendered":"A Brief History of the Floppy Disk"},"content":{"rendered":"

Ah, the floppy disk. How I miss thee. How I don’t. There was a certain tactile pleasure to inserting you into your drive, and in the early days, locking you in place. The audible click and\/or snap of the mechanism just added to the delight.<\/p>\n

Alas, you were too easy to spindle, fold, or mutilate; too slow, and not capacious enough. Not to mention susceptible to data loss when you got too close to a magnetic source. You were certainly better than the tape cassette drive you replaced, but I had to move on, and I can still feel the anguish as I think of the look on your…<\/p>\n

Wake up, Jon! You couldn’t wait to move to hard drives when you got the chance. And SSDs<\/a> in their turn. Stop with the maudlin reminiscing! Okay, I’m back now.<\/p>\n

A Brief History of the Floppy Disk<\/h2>\n

Most people are old enough to have at least passing familiarity with the floppy disk as it appeared in its ultimate 3.5-inch form. I still find them at times discarded on the street. That final incarnation sported a rigid shell that somewhat undermined the validity of the name, but at least the magnetic media inside was floppy. Aside from the rigid hub at any rate.<\/p>\n

Before that, there was the all-soft 5.25-inch floppy, and predating that, the massive, even more pliant 8-inch floppy. The latter truly was a floppy, noticeably drooping if you picked it up from the edge. I remember you well. (Stop it!) IBM holds the patents for the technology (applied for in 1969, granted in 1972), though there’s an interesting claim from Japaneses inventor Yoshiro Nakamatsu<\/a>.<\/p>\n

A brief aside: The floppy disk is hardly dead. As with vinyl records, it’s still for sale, and alive and well in the nostalgia and hobbyist market. In a sleep-tight-tonight, your-Air-Force-is-awake moment, as recently as 2016 the U.S Department of Defense was using 8-inch floppies<\/a>. If it ain’t broke, don’t fix it?<\/p>\n

I already described some of the floppy drive’s finer characteristics, but a bit more detail is\u00a0 in order. A floppy disk consists of a sheath or shell harboring a thin disk of polymer coated with a baked coating rife with magnetic particles. It’s written and read with the same type of read\/write mechanism used in tape recorders, i.e., a magnetic field is employed to detect or change the orientation of the magnetic particles. This same fundamental technology is employed in hard drives to this day.<\/p>\n

Unlike a tape recorder, where the tape slides past a stationary read\/write head, the heads on a floppy drive are on an arm that is stepped mechanically across the surface by a motor, reading and reorienting particles in concentric circles, or bands.<\/p>\n

8-inch and 5.25-inch floppies had holes like a 45-rpm record and were basically clamped in place by the spindle, while 3.5-inch floppies had a hub with a keyhole that married to a key in the spindle. Think Ghostbusters. Now don’t think Ghostbusters. You can’t, can you?<\/p>\n

Floppies could be single-sided, or double-sided, and increased in areal density with each iteration. Basically in the order shown below:<\/p>\n