Originally Posted by Tim Deegan
Yeah, it's the 'in theory' bit that I had problems with last time.
Yeah I've been there, done it and got the tee shirt, several times over.
Easeus ToDo Backup Free
(you might have to deactivate the web protection component of your AV to download - I did using avira)
Make yourself an Image of your C: drive and store it somewhere safe like on a usb drive. Then you can play about till your hearts content safe in the knowledge that should you screw up you can get back to square one with just a few clicks and a bit of time.
Strangely things don't go tits up so much when you've got a backup. Sod's law I suppose.