Hi all,
just upgraded to Windows 10 with my existing 8.1 installation, so far so good.
I have a spare licence and spare hard drive for 8.1 to go onto, tried reverting to 8.1 and attempted to install, wouldn't allow me to install to the spare drive and insisted it was going to wipe my drive to do a clean install. How do I install my spare 8.1 on the spare disk leaving 10 alone and being able to dual boot both?