EMERSON KJ2231X1-EA1繼電器模塊
如果閃存磁盤(pán)上安裝了修改主引導記錄（MBR）的操作系統，則需要執行以下步驟來(lái)為DOS重寫(xiě)MBR。14.運行FDISK/MBR。15.運行FORMAT C:（如果您想將閃存磁盤(pán)作為可引導DOS設備，請使用擴展名/s選項）。16.格式D：（僅當創(chuàng )建了兩個(gè)分區時(shí)才需要）。17.重置CPU并進(jìn)入CMOS設置。18.將主控制器設置為“自動(dòng)”。19.將引導設備設置為所需的引導源。簡(jiǎn)單系統的驅動(dòng)器號分配如第67頁(yè)圖3-1所示。對于這些多分區配置，了解操作系統分配驅動(dòng)器號的順序是必要的。操作系統將驅動(dòng)器號C分配給第一個(gè)硬盤(pán)（引導設備）上的活動(dòng)主分區。驅動(dòng)器D分配給下一個(gè)硬盤(pán)上第一個(gè)識別的主分區。操作系統將繼續在兩個(gè)驅動(dòng)器之間以交替的方式向主分區分配驅動(dòng)器號
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
