Hi,
I've bought Windows Pro 8.1 5 years ago, & I've upgraded it to Windows 10 when it was launched for free.
Unfortunately, I've removed my Windows OS from my Mac, due to limit of space.
So I wanted to know, how would I be able to retrieve my Windows 10 Key, so I can re-install the windows on my Mac without buying Windows 10? So I would skip the part of upgrading from Windows 8.1 to Windows 10.
Regards,
Hosam
***Modified title from: Windows 8.1 Pro Key conversion into Windows 10 Key ***