I'm building a new computer and im going to use the same hard drive i used in my current computer. Do i have to fully erase the data before i install it into my new build OR will windows simply rewrite everything when i boot off the disk on first start up? Im looking for a completely fresh install, i want to start all the way over from scratch again. I have all my data backed up onto another drive and everything. Anyway, just lemme know what i have to do to go about using a preused HDD in an old build.