I have laptop that come with windows 8 installed and I install windows 10 on the same hard drive (in new partition) using same product key.
I want to keep windows 8 and don't want to use windows 10 right now but I install it to get free upgrade before 29/07/2016 (the last day for free upgrade)
my question is : is that ok or my product key will be blocked.
- Now both windows are activated
- Original windows 8 is Single Language OEM
- I install windows 10 using bootable flash drive that I made it by Media Creation Tool downloaded from Microsoft site.