Over the past several days there have been various posts, etc. across a variety of social media engines stating that some hack (be it a person or a procedure) shows that a Windows 7 Upgrade disc can perform a clean installation of Windows 7 on a blank drive from a technical perspective.
Eric Ligman from Microsoft posted in his blog that, they often forgot to mention a very basic, yet very important piece of information Technically possible does not always mean legal.
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