MacOS – Clean install of Lion

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I have a 1st generation MacBook Air running Leopard 10.5.8. Recently it's not working very smoothly anymore. I've my Lion 10.7.4 retail DVD with me. When I boot up to the Lion CD, it shows that I can't update from the current OS.

So if I use Disk Utility to format the hard drive, then will the installation install a new, clean Lion to my hard drive?

Best Answer

From the Apple OS X Lion website:

General requirements: Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor

The MacBook Air 1st gen has a Core 2 Duo processor. source

So it should work.

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