Windows 10 & formats

[#1]

I was going to hold off installing w10 untill christmas so that i didnt get caught up in all the bugs, but im now thinking about installing it when it becomes ready. But i have some questions...  is there an option to wipe my hdd from all the crap before i install the upgrade  ?

[#2]

I have not tried it but it appears as an option.

[#3]

I'm on windows 10 now, I backed my stuff up and went for a clean install. It gives you 3 options 1 to upgrade and save current data, cant remember the 2 one .. I went for the 3rd option wipe all and fresh install. I'm now trying to add updates and all, there seams to be an issue with the gfx drivers for AMD... ill see how it goes.