Ok so I have a 350gb (OS) hdd and another 1tb hdd, just installed my ssd and want to move my OS. I'm going to make a bootable USB, unplug the OS hdd and then boot from the USB and clean install Win10 on ssd. what do i from here, do i have a completely fresh OS? what about all ym files from the original hdd? can i just copy/paste files? delete files? Thanks