I'm in the process of installing Windows Server 2012 R2 onto a separate partition.
The OS running on it now is Windows 8.1 Pro with Hyper V enabled.
At the very minimum I want to preserve 8.1 if I need it to multiBoot and save my Windows 8.1 installation.
My preference of course is to use both Win8 and the server using Hyper V at the same time.
MS Help files on the installation choice are not as clear as i'd like, at least not to me.
So my only question, when installing Windows 2012 R2, should I select UPGRADE or CUSTOM installation?
I'm ready to install so someone please answer ASAP.