How to do a clean install of OS X Lion, from Lion

You're probably in a similar situation as me. My hard drive was cluttered with a load of crap I didn't want, so I wanted to start again. I moved all my vital files onto a usb drive, then got stuck finding a way to do a clean install of Lion, from within Lion. So, here's how.

You will need:
- A Mac running OS X 10.7 - Lion
- To have bought OS X 10.7 - Lion in the Mac App Store (unconfirmed)
- I also strongly recommend backing up your hard drive (be it Time Machine, or whatever)

Firstly, and obviously, you'll want to backup and make sure you have another copy of all your vital files.

Step 1: Boot into Lion Recovery Mode

Now that you have all your files safely backed up somewhere, we can get to actually doing this.

Restart your Mac, and hold Command + R (⌘ + R) as it powers back on.

This should take you into Lion Recovery Mode (pictured).