Today in Apple history: Apple II gets its first disk drive


Disk II pic
The Disk II floppy drive was anything but a flop for Apple.
Photo: Wikipedia CC

June 1: Today in Apple history: Apple II gets a disk drive, the Disk II floppy drive June 1, 1978: Apple launches the Disk II floppy drive, one of the company’s most important peripherals ever.

The best floppy drive available at the time, Disk II solves the Apple II computer’s most glaring weakness — a lack of storage. It also helps establish Apple’s flair for handsome profit margins.

Apple Disk II launch

The Apple II had been available for around six months when the need for a better storage option became obvious. In today’s world of cloud storage and 1-terabyte iPhones, it’s strange to consider a time when storage space was at a severe shortage on Apple machines. That certainly proved the case in 1977, however. At that time, the only way for users to store and access programs and data was using unfathomably slow cassette tapes.

The floppy disk provided a new solution. IBM invented the 8-inch floppy in the early 1970s. Shugart Associates later shrank it to 5 1/4 inches, a size more appropriate for personal computers. The 5 1/4-inch floppy disk debuted in 1976, making it cutting-edge technology when it arrived on the Apple II.

An impressive feat of engineering

Apple’s first investor and (later) second CEO Mike Markkula recommended that Steve Wozniak build a disk drive for the Apple II. His rationale? Providing an easier way to store and access programs would make the computer far more compelling to potential customers. At the time, many people remained unsure why they needed a computer in their home.

As Apple co-founder Wozniak recalled in his autobiography, iWoz, he wanted to attend the Consumer Electronics Show in Las Vegas. However, he was told that only Apple marketing people were attending.

“I asked Mike, if I finished the disk drive in time, could I go to Vegas for the show?” Woz recalled. Markkula agreed.

Steve Wozniak and Randy Wiggington go into overdrive

This interchange took place in late 1977, leaving Woz with an incredibly tight, two-week window to get a prototype up and running. To help develop the necessary software to get the Disk II working, Woz drafted Randy Wiggington, one of Apple’s very first employees. (Wiggington met Wozniak during the Homebrew Computer Club days.)

Subsisting on takeout meals from McDonald’s, the pair got the first Disk II working over the Christmas break. They worked every day with the exception of December 25, which Wiggington took off. (Wozniak didn’t.)

Woz later described the Apple floppy drive as the finest piece of engineering he ever engaged in. Wiggington enjoyed the challenge, too.

“That was so awesome, so much fun,” Wiggington told me when I interviewed him for my book The Apple Revolution. “It wasn’t about money or fame, it was a nerdy accomplishment that we were proud of.”

They got to Las Vegas and, after a last-minute hiccup in which they accidentally wiped the demo disk while attempting to create a backup, the CES debut worked perfectly.

Disk II becomes a big hit for Apple

When it launched in June 1978, the Disk II became a great success for Apple, boosting sales of the Apple II as Markkula had hoped. It arrived around the same time as Apple DOS, Apple’s first official operating system.

The Disk II proved significant in two other ways as well. First, it became obscenely profitable for the company — and helped establish the high-profit-margin strategy that continues to this day. Using only $140 in components, Apple manufactured a disk drive that sold for $495 during preorders. (It cost $595 if bought later.) Even at that price, though, the Disk II was the most-affordable floppy disk drive sold by any computer company at the time.

The second reason the Disk II was important is because it marked the end of an era at Apple. Like the Apple-1 and Apple II computers, this was a device predominantly designed by Woz, with only a team of two responsible for it. Afterward, Apple moved to a more committee-driven approach to its tech. Initially, this hurt the company, resulting in the disastrous Apple III.

Apple went on to produce six variants of the Disk II over the course of the Apple II’s lifetime: the Disk II, the Disk III, the DuoDisk, the Disk IIc, the UniDisk 5.25 and the Apple 5.25 Drive. Some version of a floppy disk drive continued to ship with Apple computers right up to the iMac G3 in 1998.

Do you remember the Disk II? Leave your comments below.


Daily round-ups or a weekly refresher, straight from Cult of Mac to your inbox.

  • The Weekender

    The week's best Apple news, reviews and how-tos from Cult of Mac, every Saturday morning. Our readers say: "Thank you guys for always posting cool stuff" -- Vaughn Nevins. "Very informative" -- Kenly Xavier.