The easiest way to check if a Disk uses GPT or MBR Partition would be to do it from the Disk Management window. If you are familiar with the Windows Command-line interpreter, you can use either ...

If you want to find disk or volume GUID and list volume GUIDs per disk on Windows 11/10, this article would be handy for you. You can use Command Prompt, Windows PowerShell, or Windows Terminal to ...