(DNX devices) Recover the root password

If you forgot the password for the VM root account, you can recover the default password.

Before you begin

Note

Note

To perform the recovery process, you need access to the console prompt.

About this task

For VM root password recovery, perform the following steps.

Procedure

  1. Reboot the device.
    # reboot
    Press Esc during reboot.
    Hit ESC to stop autoboot:  0
    FPGA f6000720 -> 0x12
    
    1) Start system.
    2) Recover password.
    3) Enter command shell.
    
    Option?
    
  2. Choose option 3 to access the uboot prompt.
    Option? 3
    =>
    
  3. Define the root password value for the root recovery environment variable.
    => bootenv VM_Root_Recover RootPasswd
    =>
    
    This step sets the VM_Root_Recover variable with the RootPasswd value.
  4. Save the variable to flash memory.
    => saveenv
    Saving Environment to SPI Flash...
    SF: Detected W25Q128BV @ 0:0 with page size 256 Bytes, erase size 64 KiB, 32 KiB, 4 KiB, total 16 MiB
    Erasing SPI flash...Writing to SPI flash...
    Erasing SPI flash...Writing to SPI flash...done
    =>
    
  5. Reboot the device.
    => boot
    6912784 bytes read in 152 ms (43.4 MiB/s)
    Valid Boot Flag
    Setup Size = 0x00004400
    Magic signature found
    Using boot protocol version 2.0c
    Linux kernel version 3.14.17 (raop@hq1-ub-ecbld-373) #1 SMP Thu Jul 7 19:43:15 UTC 2016
    
    The root account is now enabled. You can log in with the default fibranne password.