Eric Ligman of Microsoft is sending a message this week to bloggers that although it is technically possible to install a full version of Windows 7 using a Windows 7 upgrade version, it does not mean that it is legal.

“For those of you without an existing Windows license to upgrade from, you should be aware that an upgrade license by itself is not a license to install and run Windows on your computer,” he wrote in a blog post.

“In order to upgrade, you need to have a qualifying license to upgrade from. Again, that’s why it is called an ‘upgrade,’” he added.

Source: Channel Web