Formatting a Xbox 360 HDD is very simple but can turn to total disaster if done wrong!
So in this instructable I will show you how to format a Xbox 360 HDD
*Note* This instructable only covers the new NXE from Microsoft
Step 1: Start up your Xbox 360
So first start up your Xbox 360 then when you get to your NXE dashboard go under "My Xbox" and scroll to the right until you hit "System Settings"