How to check which OS I am running

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2 Answers from the Community

  • Best Answer:

    Go to "About This Mac" under the Apple Menu.

    You will see the Version number of the OS you are running.

    10.7 = Lion
    10.6 = Snow Leopard
    10.5 = Leopard
    10.4 = Tiger
    10.3 = Panther

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  • Hit Apple logo in main bar, then "About This Mac". Pop up window will show, and have all the info you need.

    Hope that helps

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