I use Vista Home Premium on my virtualbox. I read many posts saying this was not allowed per Vista Home Premium EULA. I would like to clear this up.
Any virtualized computer is considered a computer. With that being said, yes, this is true ...
Vista Home Premium EULA
You may not use the software installed on the licensed device within a virtual (or otherwise emulated) hardware system.
With Microsoft Windows Vista, the original shipping of the operating system did not provide for virtualization of the operating system.
BUT ... After the release of Service Pack 1, Microsoft Windows Vista is now covered under virtualization.
Read more: For consumers, Windows Vista Home Basic and Windows Vista Home Premium are now licensed for use in a virtual machine environment, and the updated SP1 and Supplemental end-user license agreement for each product by language version is available at http://www.microsoft.com/about/legal/useterms/default.aspx
4. USE WITH VIRTUALIZATION TECHNOLOGIES. You may use the software installed on the licensed device within a virtual (or otherwise emulated) hardware system on the licensed device.