You could use VirtualBox to create a vhd disk file, install Win 10 to the vhd, then use EasyBCD to add an entry so the vhd boots on the real hardware. It may be more time consuming than method mentioned by acer-5100
But how can I boot on the real hardware with a normal virtualized setup? Is there an option in Virtualbox for this? And how can the Windows 7 boot manager boot from that VHD file?? (Remember that I have Win7 installed, not 10). Although this method is more time-consuming, at least it respects the Windows 7 installation (it doesn't touch the partition), right? Thanks again for your tips. PS. To staff: What happened to my last reply? Why has it been deleted? Have I broken any forum rules?
@HiddenUser Please create a separate thread if you want to discuss native VHD booting. You already have sufficient suggestions when it comes to activating Windows 10/11 on your PC, so kindly post your feedback regarding that so that we can mark this thread as solved.