To remove an MBR partition-style disk, you need to convert it to a GUID Partition Table disk that uses UEFI. For this purpose, you can use DISKPART command-line utility, Disk Management, or a ...

If you want to use Disk Utility to format—and more often than not, re-format—a drive in macOS, you may sometimes want to first choose the scheme for backwards or multi-platform compatibility.