I'm trying to install Windows 11, but I need to enable secure boot, which requires my drive to be in MBR format. Right now, it's in GPT. I've attempted to use the command prompt as an administrator with the command 'mbr2gpt /validate /disk:1 /allowFullOS', but it fails with a validation error about the disk layout. Can anyone help me troubleshoot this?
2 Answers
Before you proceed with converting your disk, make sure it meets the necessary prerequisites for MBR2GPT. Your disk must currently be in MBR format and have enough unallocated space. Check to confirm it doesn't have any extended or logical partitions and that it has the correct number of primary partitions. You can find more details on the Microsoft documentation page.
Are you upgrading from Windows 10 to Windows 11 while trying to keep your files? If you’re just doing a fresh install, using a USB install key or an ISO will let you convert your disk to GPT when it reformats during the installation.
Yes, I'm upgrading from 10 to 11, and I want to keep all my files if I can!