yes, everything in your windows install will be gone.....Poof! If you want to get rid of windows be sure you back up anything you want to keep to a different partition or take it off the machine for safe keeping. One option is to upload it to Google or some other off site service. Of course cd,s or dvd,s work too.
Insanity: Doing the same thing over and over and each time expecting a different result.
Democracy is 2 wolves and a lamb voting on the menu. Liberty is an armed lamb protesting the electoral outcome. A Republic negates the need for an armed protest.