Performing an In Place upgrade from 2012 to 2012 R2

My host (Windows 2012) was running 1 virtual machine.

pre upgrade

I doubled clicked the iso to mount it, ran the setup, then selected install.  I received no warning telling me to power off my VM.

installThen selected No Thanks to downloading updates,

Capture2I then selected a GUI install

Capture3I then Accepted the terms and selected next,

Capture4I then Selected upgrade,

Capture5The install took slightly longer than 10 minutes.  Once the install had finished and I logged in, the machine was on the domain, all roles and features were installed as expected, Hyper-V was fine.  I powered on my Virtual DC.  The DC powered on fine and there were no issues at all.  This was a very painless operation with minimal downtime.