I just cloned a hard drive partition (of Windows 10) to a new hard drive.
The thing is that I did it wrong and I just copied the data part, NOT the boot part. So now I have a new hard drive with a Windows copy with no boot partition.
I tested many tutorials, but the problem is that the bootable part NEVER existed on the new hard drive (so it can't be recovered!).
If someone knows how to create from scratch a new bootable partition for Windows 10. I have many licensed programs and lots and lots of configuration.
And if someone asks I just deleted all the data from the old hard drive (genius!), so I can't copy now the bootable disk partition.