EMERSON KJ2231X1-EA1继电器模块
如果闪存磁盘上安装了修改主引导记录（MBR）的操作系统，则需要执行以下步骤来为DOS重写MBR。14.运行FDISK/MBR。15.运行FORMAT C:（如果您想将闪存磁盘作为可引导DOS设备，请使用扩展名/s选项）。16.格式D：（仅当创建了两个分区时才需要）。17.重置CPU并进入CMOS设置。18.将主控制器设置为“自动”。19.将引导设备设置为所需的引导源。简单系统的驱动器号分配如第67页图3-1所示。对于这些多分区配置，了解操作系统分配驱动器号的顺序是必要的。操作系统将驱动器号C分配给第一个硬盘（引导设备）上的活动主分区。驱动器D分配给下一个硬盘上第一个识别的主分区。操作系统将继续在两个驱动器之间以交替的方式向主分区分配驱动器号
If an operating system has been installed on the Flash Disk that modifies the Master
Boot Record (MBR), the following steps are required to rewrite the MBR for DOS.
14. Run FDISK/MBR.
15. Run FORMAT C: (use the extension /s option if you want the Flash Disk as a
bootable DOS device).
16. Format D: (this is only required if two partitions were created).
17. Reset the CPU and enter the CMOS set-up.
18. Set Primary Master to “AUTO”.
19. Set boot device to desired boot source.
Drive letter assignments for a simple system are illustrated in Figure 3-1 on page 67.
Understanding the order the operating system assigns drive letters is necessary for
these multiple partition configurations. The operating system assigns drive letter C to
the active primary partition on the first hard disk (the boot device). Drive D is
assigned to the first recognized primary partition on the next hard disk. The operating
system will continue to assign drive letters to the primary partitions in an alternating
fashion between the two drives
