Properties The Win32_OperatingSystem class has these properties. BootDevice Data type: string Access type: Read-only Qualifiers: MappingStrings ("Win32API|DRIVE_MAP_INFO|btInt13Unit") Name of the disk drive from which the Windows operating system starts. Example: "\\Device\Harddisk0" BuildNumber Data type: string Access type: Read-only Qualifiers: MappingStrings ("Win32API|System Information Struc