W dniu 01.07.2020 o 12:57, Richard W.M. Jones pisze:
If you mean migration of existing guests, then you need to repartition them and reinstall the bootloader. I doubt anyone has a practical idea of how to do that either manually or automatically.
Add second drive with 32-64MB size. Create ESP partition there. Install grub-efi. Power off, switch to UEFI mode, power on, boot to grub-efi.
Much easier than with real hardware machines where you indeed need to play with partitions. On my laptop I have space available in /boot/ partition so could shrink it and create ESP from there. But already have ESP so no need.