OK, so here's my story.
Last year I got my hands on my dad's old HP Compaq 6005 Pro Small Form Factor PC, which I put a terabyte hard drive in and installed Windows 10 Pro (which I got for free upon release).
Now, I have just recently bought a ASUS ESSENTIO from a friend which has 500gb hard drive and WINDOWS 10 Home installed.
What I want to do is have the ASUS as my main PC (which has a better processor, graphics card, and overall better hardware). But my problem is that I like Windows 10 Pro more than I do Windows 10 Home.
So my question is: Is there a way to switch/upgrade/download Windows 10 Pro onto the ASUS without spending $100 to purchase it?
Also I would like to put the terabyte hard drive in the ASUS too, but I hear I'd have to reinstall the operating system anyways to use it. Is this true?