Once in protected mode, the virtual device drivers (VxDs) transferred all state information from MS-DOS to the 32-bit file system manager, and then shut off MS-DOS.
一旦在保护模式下，虚拟设备驱动程序（VxD）将传送所有MS-DOS的状态信息到32位文件系统管理器，并关闭MS-DOS。