How to 'upgrade' to Windows 10, on Virtual Machine I have Windows 7 on a virtual machine on my 2015 MBP. I want to try it on boot camp and upgrade to Windows 10, but Bootcamp won't allow anything below Windows 8. So it's not possible to 'upgrade'? Do I need to buy a new licence for Windows 10?
Look, boot camp did allow Windows 7. It is just that it only allows 64bit. 

Here is how to upgrade from Windows 7 to Windows 10: Use Windows 10 on your Mac with Boot Camp.

Also, Virtual machine is like a computer!! Just follow the following guidelines: Upgrade to Windows 10.