diskpart list disk Look under column — * means GPT, blank means MBR. Then change BIOS: | Disk Type | Required BIOS Mode | |-----------|--------------------| | GPT | UEFI (disable CSM) | | MBR | Legacy / CSM / BIOS |
diskpart list disk Look under column — * means GPT, blank means MBR. Then change BIOS: | Disk Type | Required BIOS Mode | |-----------|--------------------| | GPT | UEFI (disable CSM) | | MBR | Legacy / CSM / BIOS |