Convert MBR to GPT
Without data loss - https://www.tenforums.com/tutorials/81502-convert-windows-10-legacy-bios-uefi-without-data-loss.html
With Data loss - https://www.diskpart.com/articles/gparted-convert-mbr-to-gpt-4125.html
#mbr2gpt
Without data loss - https://www.tenforums.com/tutorials/81502-convert-windows-10-legacy-bios-uefi-without-data-loss.html
With Data loss - https://www.diskpart.com/articles/gparted-convert-mbr-to-gpt-4125.html
#mbr2gpt
Tenforums
Convert Windows 10 from Legacy BIOS to UEFI without Data Loss - Windows 10 Help Forums
How to Convert Windows 10 from Legacy BIOS to UEFI without Data Loss