Storage · The Garage Era · 1978
Apple Disk II
Disk II transformed the Apple II from cassette-bound hobby machine into a practical computer, thanks to Woz’s famously elegant controller design.
Wozniak’s brilliantly cheap floppy system for the Apple II.
Apple ProFile (1981)
Apple Disk II: key facts
When was the Apple Disk II released?
The Apple Disk II arrived in June 1978. Apple discontinued it in 1984.
How much did the Apple Disk II cost?
The Apple Disk II launched at $495 in 1978, about $2,356 in today’s money (approximate, US CPI).
What specs stand out?
Key specs: 0.14 MB storage, Apple II disk controller.
Why does the Apple Disk II matter?
Wozniak’s brilliantly cheap floppy system for the Apple II.
Full specifications
| CPU | — |
|---|---|
| Cores | — |
| Memory (RAM) | — |
| Storage | 0.14 MB |
| Display | — |
| GPU | — |
| Ports | Apple II disk controller |
| Weight | Varies by model |
| Dimensions | 5.25-inch floppy drive |
| Operating system | Driver/firmware support |
| Released | June 1978 |
| Discontinued | 1984 |
| Launch price | $495 |
How the Apple Disk II compares to today
This entire device held less data than a single modern phone photo (~4 MB).
Launched at $495 in 1978, about $2,356 in today’s money (approx., US CPI).
Method note: clock comparisons use frequency only; price conversions use US CPI.
Sources
Specs checked against Apple technical specifications archive, EveryMac, Mactracker, Wikimedia Commons image credits.
Did you know?
Its controller used far fewer chips than rivals, saving Apple money and buyers frustration.
Related Storage models
Open the Apple Disk II in the interactive archive →
Last updated: 2026-08-11