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Dell Configuration Guide for the S4048–ON System 9.14.2.6

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Locking Access to GRUB Interface

You can configure the Dell EMC Networking OS to lock the GRUB interface using a password. If you configure a GRUB password, the system prompts for the password when you try to access the GRUB interface.

CAUTION After configuring the boot access password, save it to a secure location. If you forget it, you will not be able to access the options in the startup menu. If you forget both the boot access password and the enable password, the system may become inaccessible.

To lock the GRUB interface using a password, use the following procedure:

Configure a GRUB password.
CONFIGURATION mode
boot-access password [encryption-type] boot-password

Enter an encryption type for the boot password.

  • 0 directs the system to store the password as clear text.
  • 7 directs the system to store the password with a dynamic salt.

When you configure the root access password, ensure that your password meets the following criteria:

  • A minimum of eight characters in length
  • A minimum of one lower case letter (a to z)
  • A minimum of one upper case letter (A to Z)
  • A minimum of one numeric character (0 to 9)
  • A minimum of one special character including a space (" !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~")

If you enable the boot access password, the system prompts for a password when you access the GRUB interface.

DellEMC(conf)#boot-access password 7 Hg$7^5HMoiY%
    ***********************************************************************
    *  Warning - boot-access password will enable password protection in  *
    *  GRUB. Keep it safe. Forgetting this password and the CLI password  *
    *  may result in switch becoming inaccessible.                        *
    ***********************************************************************

Do you want to configure boot-access password? Proceed [yes/no]:yes
DellEMC(conf)#

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