A) ... convert my installed Windows 7 64 Professional from BIOS boot on MBR to UEFI on GPT, because i installed a new graphics card which has a UEFI BIOS and it does not run as expected. How can i do that?
B) ... install Windows 10 in UEFI mode (but it has only a legacy BIOS), because .. i use a HDD greater then 2 TiB and i cannot use the left space, because due to having a BIOS and not UEFI the Windows Setup insists on formatting the disk as MBR. How can i change that?
These are just examples.
Tell us your thoughts on the why and how you did get the idea that UEFI is the solution to the problem?