I have bought a laptop (Lenovo ThinkPad T520) with a locked BIOS. So I can't change the boot order of the laptop. The upmost device in the boot order is the internal
HDD. Fortunately there is a working Linux with
Grub2 installed, which I have access to.
I also want to install Windows 10 now. How do I have to change the
Grub2-configuration in order to be able to boot the Windows-installation from a Win10-Boot-Medium (ISO)?