This page provides instructions for checking which operating system you have on your Mac (El Capitan, Sierra, etc.).
Open "About This Mac"
- Click on the Apple icon in the top-left corner of your screen
- From the menu, select About This Mac
Your Version Number Is Listed Under "OS X"
- Snow Leopard is 10.6
- Lion is 10.7
- Mountain Lion is 10.8
- Mavericks is 10.9
- Yosemite is 10.10
- El Capitan is 10.11
- Sierra is 10.12
Contact Support Central
- View Location
- View Hours
- Phone: 405-425-5555
- Email: supportcentral@oc.edu
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