Will Windows boot after GPT partitioning?

Question

Windows

There is a 1TB HDD, I bought new hardware (the old one was very old - that is, without UEFI), except for the HDD, of course it has Windows on it, or rather two - 7 and 10.
If I convert this screw, for example, from 10 using the mbr2gpt utility, can I then boot both Windows?

Or is it necessary to reinstall both?

Answer 1

You can, but you have to restore the bootloader