Here’s the case: I’m installing Windows 10, but even when formatting a hard drive in the installer Windows still won’t install, but complains about MBR, EFI, GPT, whatever. The issue lies within the MBR that is on the target disk, and it needs to be converted to GPT:
- Hit
shift + F10
to open the command prompt in the Win 10 installer diskpart
to start the Disk Partitioner applicationlist disk
to show all disksselect disk #
where # is the target disk, as indexed bylist disk
clean
Warning: This empties the target disk!convert gpt
to finally convert MBR to GPT.
After this the target disk should be empty and ready for Win 10 installation.