To determine the correct drive letter, assume the system boots to DOS without a CD-ROM driver, and that all drives have the File Allocation Table (FAT) file system.

• 要确定正确的驱动器号,应假定系统在没有CD-ROM驱动器的情况下启动DOS,并且所有驱动器都有文件分配表(FAT)文件系统。