I downloaded the ISO file for Windows 10 quite some time back. Unfortunately it wasn't compatible with any of the spare machines I had available.
There was no way I was going to put it on my main Custom Desktop PC.
Happily for me, I purchased last week a new Lenovo Laptop/Notebook with Win 8.1 64 Bit. I cleaned that up, tailored it with Classic Shell and was well pleased with myself.
Today I decided to now finally install Windows 10 Technical Preview on the basis of a dual boot OS. Of course I did some research to refresh the brain on dual booting.
Download new ISO file and burn it. Make note of the Product Key. Shrink the Drive by about 30GB to leave "unallocated" space for Win 10 to install itself once I elect to "Custom" install Windows 10.
Suitably armed? Away we go.
Yes, it takes the usual Microsoft eternity...
End result?
1. Never asked me the expected:
a) Upgrade Install OR
b) Custom Install only
2. Never asked me for the Windows 10 Product Key
I now have a Windows 8.1 Laptop/Notebook - with some Windows XP look and feel, the same desktop as before - but embellished in the bottom right hand corner above the task bar with the words:
Windows 10 Technical Preview Evaluation Copy - Build 9926
At the moment it is having a panic attack trying to update.
Isn't this just so much fun?