Password recovery

see also: http://juniper.cluepon.net/index.php/Password_recovery

• From console, interrupt the boot routine:

        Hit [Enter] to boot immediately, or any other key for command prompt.

        Booting [kernel] in 9 seconds...

        < Press the space bar at this point >

• Enter into single-user mode:

        Type '?' for a list of commands, 'help' for more detailed help.
        ok boot -s

• Enter the shell:
  • Mount the virtual file systems (for JUNOS 5.4 and above, it is not necessary to mount the jbase (or jcrypto) package, however the other packages still need to be mounted):

        NOTE: to go to multi-user operation, exit the single-user shell

(with ^D)

        # cd /packages
        # ./mount.jbase
        Mounted jbase package on /dev/vn1...
        # ./mount.jkernel
        Mounted jkernel package on /dev/vn2...
        # ./mount.jroute
        Mounted jroute package on /dev/vn3...

• Enter recovery mode:

 # /usr/libexec/ui/recovery-mode

• Enter configuration mode and either delete or change the root authentication password:

        root> configure
        Entering configuration mode

        [edit]
        root# delete system root-authentication

• Commit the changes, and exit configuration mode

        [edit]
        root # commit
        commit complete

        [edit]
        root@router# exit
        Exiting configuration mode

        root@router> exit

Exit recovery mode and enter “y” when prompted to reboot the system:

        Reboot the system? [y/n] y
        Terminated

The system now reboots and changes made to root authentication are activated.