Can i install fresh copy of lion on Mac without any requirement.

I have a MacBook pro 15ich core i5. i want to install fresh lion on my system without any requirement means without snow leopard. i had downloaded a lion from app store . how do i install fresh lion on my system . thnx

First, backup your system.
Reboot your system, press and hold the Command-R keys at the boot chime to enter the Recovery HD. From there you can use Disk Utilities to erase your Macintosh HD and then reinstall Lion. You will need an internet connection and I can't remember if you'll be prompted for your Apple ID and password prior to Lion downloading.

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