Information Computing and Technology Services

OS X - What is Your Operating System?

How to tell what operating system you have...

First, check the apple in the top left of your screen.

  • A vivid multicolored striped apple means you have OS 9 or less.
  • A blue apple indicates X.1 to X.4
  • A dark grey apple indicates X.5 or higher.

To confirm this, go to Apple menu>About this mac. There you will see exactly version of operating system you have.

About this mac

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