I'm happy to go down the rout of re-installing Win8.1 (genuine) then do the upgrade, but the disc needs to be formatted first. Is there a live CD that can format to NTFS?
Short version: I need to format my HDD to NTFS with no current OS. Long version: I was happily running Windows 10, but wanted to do a re-installation to speed things up. The installation hung at 1% for an hour or so, so I rebooted - no operating system. I downloaded a win10 iso and booted from...