How to format a device using the BootROM of S series switches

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On S series switches (except S1700 switches), perform the following operations to format a device through the BootROM:
On the BootROM main menu, select Enter filesystem submenu.
2. In the file system submenu, select Format flash. For S7700&S9700 series switches, you also need to select Format CFcard.
Note that all the files in the flash memory, including the system software, will be deleted after formatting. Re-upload the system software to the device, otherwise the device will not start.

Other related questions:
How to upload files using the BootROM of S series switches
On S series switches (except S1700 switches), the BootROM allows you to establish connections between the device and other devices or PCs to implement fast transfer of the system software, configuration files, and patch files. Files can be transmitted through serial and Ethernet interfaces. You need to modify the transmission rate during the file transfer using the serial interface. This transmission mode is simple to configure, but has a low transmission rate. File transfer using the Ethernet interface is mainly described here, and the configuration process is as follows: 1. On the BootROM main menu, select Enter ethernet submenu to enter the Ethernet submenu. 2. In the Ethernet submenu, select Modify ethernet interface boot parameter to enter the menu for setting Ethernet parameters. BOOTLINE SUBMENU 1. Set TFTP protocol parameters 2. Set FTP protocol parameters 3. Return to ethernet menu Enter your choice(1-3): 3. Select the file transfer mode as required. The following takes FTP parameter settings as an example: BOOTLINE SUBMENU 1. Set TFTP protocol parameters 2. Set FTP protocol parameters 3. Return to ethernet menu Enter your choice(1-3): 2 '.' = clear field; '-' = go to previous field; ^D = quit Load File name : devicesoftware.cc //Enter the name of the file to be uploaded. Switch IP address : 192.168.1.15:ffffff00 //Enter the management IP address of the device, and ensure that the management IP address is on the same network segment as the IP address of the FTP server. Server IP address : 192.168.1.40 //Enter the IP address of the FTP server. FTP User Name : huawei //Enter the user name for logging in to the FTP server. FTP User Password : //Enter the password in cipher text for logging in to the FTP server. After the configuration is complete, the device automatically displays the Ethernet parameter setting menu. 4. Select Return to ethernet menu to return to the Ethernet submenu. 5. In the Ethernet submenu, you can select Download file to Flash through ethernet interface to download files in the FTP server, or select Upload Configuration file to Ftp through ethernet interface to upload the configuration file to the FTP server. The setting for the TFTP server is similar to that for the FTP server, but you do not need to configure the user name and password. Note that the interface of the BootROM menu differs slightly on different devices. Perform configurations according to the actual displayed information on the device. More information about how to upload files through BootROM is as follows:

BootROM access on S series switch
For S series switches except S1700 switches, perform the following steps to access the BootROM: 1. Log in to the device through the console port. 2. Restart the device. When information similar to "Press Ctrl+B to enter boot menu" or "Press Ctrl+B or Ctrl+E" to enter BootROM menu" is displayed, press Ctrl+B or Ctrl+E within 3 seconds. 3. Enter the BootROM password to access the BootROM main menu. By default: For fixed switches running a version earlier than V100R006C03, the default BootROM password is huawei; for fixed switches running V100R006C03 or a later version, the default BootROM password is Admin@huawei.com. For modular switches running V100R006C00 or an earlier version, the default BootROM password is 9300; for modular switches running a version later than V100R006C00, the default BootROM password is Admin@huawei.com.

Bootrom upgrade on S series switch
For S series switches except S1700 switches, the BootROM file is used to start boards. The version numbers of the BootROM is in ascending order. The greater the version number, the later the version. A later version is compatible with earlier versions. For example, if the BootROM version that matches the product version is 109, all the BootROM versions later than 109 can be used. Load the BootROM file to the flash memory of a device through the serial port. For S series modular switches, you can perform the following steps to upgrade the BootROM version online: 1. Upload the system software package containing a new BootROM version to the CF card or the flash memory through FTP. 2. Run the upgrade command to load the BootROM online. For details, see the Command Reference. Note: The corresponding board must be registered before online upgrade. For S series fixed switches running V200R001 or a later version, run the upgrade basic-bootrom filename [ slot slot-id ] command in the diagnostic view to upgrade the BootROM version. Note: Before running this command, read the related release notes and ensure that the new BootROM version is compatible with the VRP software version. Do not upgrade the BootROM if the two versions are incompatible, and perform operations as instructed.

How to restore the default BootROM password for S series switches
To restore the BootROM password on S series switches (except S1700 switches), use one of the following methods: 1. For V200R001 or later, run the reset boot password command in the user view to reset the BootROM password to the default. By default, For S series fixed switches running a version earlier than V100R006C03, the default BootROM password is huawei; for fixed switches running V100R006C03 or a later version, the default BootROM password is Admin@huawei.com. For S7700&S9700&S12700&S9300 switches running V100R006C00 or an earlier version, the default BootROM password is 9300; for S7700&S9700&S12700&S9300 switches running a version later than V100R006C00, the default BootROM password is Admin@huawei.com. 2. For switches running V200R007 or a later version, choose Enter password submenu in the BootROM menu to access the password submenu. Select Reset BootROM password in the password submenu to restore the default BootROM password. 3. For modular switches with dual MPUs: a. If the software version is V200R005 or later, run the reset boot password command to restore the default BootROM password on both the active and standby MPUs. b. If the software version is V200R003 or earlier, run the reset boot password command to restore the default BootROM password on only the active MPU. Then perform an active/standby MPU switchover, and run the reset boot password command to restore the default BootROM password on the original standby MPU. You are advised to perform an active/standby MPU switchover during off-peak hours.

How to modify the default BootROM password for S series switches
To modify the default BootROM password on S series switches (except S1700 switches), use one of the following methods: 1. Modify the default password on the BootROM menu. a. Log in to a switch through the console port, and restart the device. b. When information similar to "Press Ctrl+B to enter Boot Menu�? or ""Press Ctrl+B or Ctrl+E to enter BootROM menu�?" is displayed

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