So im going to be selling my custom built computer but need help going about wiping the hard drive. Is it possible to wipe it without taking off windows? and if that is not possible what is the safest way to completely wipe a hard drive without the SSD malfunctioning when it does get wiped?. I would like to just wipe everything but the OS so that the people im selling it to dont have to buy a new copy and everything is for sure working thanks for the replies everyone.