negative1 said:there is NO WAY that changing an OS, is a simple matter of using
the same codebase, there's millions of lines of code, debugging,
and new hardware to worry about..
OSs are changed all the time in big ways. Comparing the differences between 2000, Vista, and XP, Microsoft could still have supported all versions. For instance, there was absolutely no damn reason why XP could not have had the same 3D hardware support that Vista got. That was shameless.