Forum Question: Is Mac OS X Lion a completely new OS?

Gary, I have read just about everything about Lion, but have not gotten the answer: Is Mac OS X Lion a complete operating system, or just another major update to Snow Leopard?
I know one need Snow Leopard because of the App store, but will Lion install a complete NEW operating system, or just update?
Sorry about the repetition.
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Joe

Comments: 2 Responses to “Is Mac OS X Lion a completely new OS?”

    8/3/11 @ 8:02 am

    The simple answer is: it is a completely new operating system.
    The complex answer is that almost no OS upgrade like this is completely new. They started working with Snow Leopard and rebuilt parts and added other parts to create Lion.
    But from the user standpoint, the entire Snow Leopard System folder was replaced by Lion. So it replaces Snow Leopard.

    Mr Anthony Cotton
    8/3/11 @ 2:22 pm

    To me this is Irish. Your first line is spot on. Then you start with the complex answer. Is the parts took out of a Snow Leopard,and then installed into Lion. This to me sounds as if, when they are installing parts into Lion they are second hand.
    I understand what you mean. Gary

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