http://www.windowscentral.com/you-can-u ... on-windows
http://yro.slashdot.org/story/15/03/18/ ... 0-upgrades
bron: http://arstechnica.com/information-tech ... ine-users/Speaking to Reuters from the WinHEC conference in China, Microsoft's operating system chief Terry Myerson said, "We are upgrading all qualified PCs, genuine and non-genuine, to Windows 10." This means that everyone running Windows 7 or 8.1, irrespective of whether you pirated the operating system or not, will be allowed to upgrade to a legitimate version of Windows 10.