连上串口线，启动时按下Ctrl + B，然后选择7
BIOS LOADING ... Copyright (c) 2011-2012 HUAWEI TECH CO., LTD. (Ver121, Jun 14 2012, 10:49:20) Current flash Fs: DosFs flash:/ - Volume is OK Press Ctrl+B to enter BOOTROM menu... 2 password: BOOTROM MENU 1. Boot with default mode 2. Enter serial submenu 3. Enter startup submenu 4. Enter ethernet submenu 5. Enter filesystem submenu 6. Modify BOOTROM password 7. Clear password for console user 8. Reboot Enter your choice(1-8): 7 Note: Clear password for console user? Yes or No(Y/N): y Clear password for console user successfully. Choose "1" to boot, then set a new password. Note: Do not choose "8. Reboot" or power off the device, otherwise this operation will not take effect. BOOTROM MENU 1. Boot with default mode 2. Enter serial submenu 3. Enter startup submenu 4. Enter ethernet submenu 5. Enter filesystem submenu 6. Modify BOOTROM password 7. Clear password for console user 8. Reboot Enter your choice(1-8): 8 Reboot...