S5110-52p-pwr死机重启后出现问题，请高手指点如何处理

版本丢了，可以参考如下方法重新引导下：

Starting......

    ************************************************************************

    *                                                                      *

    *               H3C S5120-28SC-HI BOOTROM, Version 108                 *

    *                                                                      *

    ************************************************************************

    Copyright (c) 2004-2011 Hangzhou H3C Technologies Co., Ltd.

    Creation Date       : Sep  7 2011, 11:28:24

    CPU Clock Speed     : 600MHz

    Memory Size         : 512MB

    Flash Size          : 128MB

    CPLD Version        : 004

    PCB Version         : Ver.C

    Mac Address         : 70f96deb713d

Press Ctrl-B to enter Extended Boot menu...0

3）必须在出现“Press Ctrl-B to enter Boot Menu...”的2秒钟之内，键入<Ctrl+B>，才能进入BOOT菜单，否则系统将进入程序解压过程；若程序进入解压过程后再希望进入BOOT菜单，则需要重新启动交换机。

Please input BootRom password:

   BOOT MENU

1. Download application file to flash

2. Select application file to boot

3. Display all files in flash

4. Delete file from flash

5. Modify BootRom password

6. Enter BootRom upgrade menu

7. Skip current system configuration

8. Set BootRom password recovery

9. Set switch startup mode

0. Reboot

Enter your choice(0-9): 1

4) 进入BOOT菜单后，键入“1”后回车。

1. Set TFTP protocol parameters

2. Set FTP protocol parameters

3. Set XMODEM protocol parameters

0. Return to boot menu

Enter your choice(0-3): 1

5) 键入“1”后回车，选择TFTP方式参数设置，输入升级的文件名（含后缀），输入服务器地址，本地地址和网关。

Load File Name     :S5120HI-CMW520-R5101.bin

                   :S5120HI-CMW520-R5101P02.bin

Server IP Address  :192.168.2.1   192.168.1.2

Local IP Address   :192.168.2.2   192.168.1.1

Gateway IP Address :192.168.1.254  0.0.0.0

Are you sure to download file to flash? Yes or No (Y/N):Y

Loading........................................................................ ............................................................................... ..................................................................................Done!

Free space: 108253184 bytes

Writing flash..................................................................

...............................................................................

..........Done!

Please input the file attribute (Main/Backup/None) m

6）指定上传的文件为系统加载主文件，键入“m”

7）输入“0”，选择“Return to boot menu”返回到BOOT菜单；再输入“0”，选择“Reboot”重启即可。