def METHOD_NAME(self) -> None:
    """
    Turn partition table into MBR (msdos table)
    """
    partition_ids = []
    efi_partition_number = None
    for number in range(1, self.partition_id + 1):
        partition_info = Command.run(
            ['sgdisk', '-i={0}'.format(number), self.disk_device]
        )
        if '(EFI System)' in partition_info.output:
            efi_partition_number = number
        partition_ids.append(format(number))
    if efi_partition_number:
        # turn former EFI partition into standard linux partition
        self.set_flag(efi_partition_number, 't.linux')
    Command.run(
        ['sgdisk', '-m', ':'.join(partition_ids), self.disk_device]
    )