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Comment: oops, another GRUB change

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  1. Boot the switch as soon as you see the GRUB menu. 

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    languagetext
                           GNU GRUB  version 2.02~beta202-22+deb8u1cl3u3
    
     +----------------------------------------------------------------------------+
     |*Cumulus Linux GNU/Linux                                                    | 
     | Advanced options for Cumulus Linux GNU/Linux                               |
     | ONIE                                                                       |
     |                                                                            |
     +----------------------------------------------------------------------------+     
  2. Use the ^ and v arrow keys to select Advanced options for Cumulus Linux GNU/Linux. A menu similar to the following should appear:

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                           GNU GRUB  version 2.02-cl3u3
    
     +----------------------------------------------------------------------------+
     | Cumulus Linux GNU/Linux, with Linux 4.1.0-cl-7-amd64                       | 
     |*Cumulus Linux GNU/Linux, with Linux 4.1.0-cl-7-amd64 (recovery mode)       |
     |                                                                            |
     +----------------------------------------------------------------------------+  
  3. Select Cumulus Linux GNU/Linux, with Linux 4.1.0-cl-1-amd64 (recovery mode)
  4. Press ctrl-x to reboot.
  5. After the system reboots, set a new root password. This is useful since the root user provides complete control over the switch, and providing a new password now helps in case the current password has been forgotten, which is a common problem.

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    root@switch:~# passwd
    Enter new UNIX password: 
    Retype new UNIX password: 
    passwd: password updated successfully
    Tip

    You may want to take this opportunity to reset the password for the cumulus account as well.

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    root@switch:~# passwd cumulus
    Enter new UNIX password: 
    Retype new UNIX password: 
    passwd: password updated successfully
  6. Sync the /etc directory using btrfs, then reboot the system:

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    root@switch:~# btrfs filesystem sync /etc
    root@switch:~# reboot -f
    Restarting the system.