Quote: Originally Posted by Manigue
If I have to re-install Vista64 then I should consider a dual boot.
According to the EULA, you're not allowed to use the qualifying OS anymore (the version of Windows you upgraded from). Except if you need to reinstall Windows 7 again in the future.
EDIT - of course you could probably still use Vista so long as you don't use 7. In other words you're not supposed to be using them both. Whether or not a dual boot actually violates the license agreement, I don't know (technically you wouldn't be using them both at the same time, as you'd need to reboot to get to the other OS). It seems like a bit of a gray area.