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# System 3

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![https://github.com/seanpm2001/WacOS/blob/master/Graphics/System-software/1/Apple_Macintosh_Desktop.png](https://github.com/seanpm2001/WacOS/blob/master/Graphics/System-software/1/Apple_Macintosh_Desktop.png)

( **Predecessor:** [System 2 (1985)](https://github.com/seanpm2001/WacOS/wiki/Apple-System-2/) | **Successor:** [System 4](https://github.com/seanpm2001/WacOS/wiki/Apple-System-4/) )

Apple System 3 is the third version of the then-to-be classic MacOS series of operating systems produced by Apple Inc.

System 3.0 (Finder 5.1) was introduced with the Macintosh Plus, officially implementing HFS, 800K startup drives, support for several new technologies including SCSI and AppleShare, and Trash "bulging" (i.e., when the Trash contains files, it gains a bulged appearance).

**This article on classic Mac OS is a stub. You can help by expanding it.**

**This article is a modified copy of the Wikipedia article of the same subject. It needs to be rewritten to be more original.**

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## Sources

[Wikipedia - Classic Mac OS # System 1-4](https://en.wikipedia.org/wiki/Classic_Mac_OS#System_2)

Other sources are needed, and this article needs LOTS of improvement and original work to prevent it from being a copy and paste from Wikipedia.

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## Article info

**Written on:** `2021 Thursday September 23rd at 2:31 pm`

**Last revised on:** `2021 Thursday September 23rd at 2:31 pm`

**File format** `Markdown document (*.md *.mkd *.markdown)`

**Article version:** `1 (2021 Thursday September 23rd at 2:31 pm)`

***

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