How to Protect GRUB with Password in Linux ?

GRUB called as Grand Unified Bootloader is a default Boot loader on Unix OS. In a Linux system, anyone can log in to single-user mode and change the system settings. This is one of the security threat and to avoid this we can we require Grub to set password protected.

  1. Login with the root user.

  2. Hit the below command. It will ask for password and generate an md5 hash password. Copy it at a safe location.

    # grub-md5-crypt
    password --md5 $1$b7MLm0$UHtg4Ro6v/JrkWk8yBLMK0


  3. Open the file /boot/grub/menu.lst or /boot/grub/grub.conf and add the saved md5 password which we have generated earlier.

    # vi /boot/grub/grub.conf

          IMP Note: Please take the backup of your grub file without fail so we can restore it if there is an issue.

  1. Now, add the generated md5 password into grub.conf file as password –md5



  2. Save the file by pressing ESC and type:wq to save and exit.

  3. Reboot your server.

  4. Now, whenever you will need to edit the grub menu, you will need to provide the password as per the below image.

Related Articles

How to install Softaculous on Linux server with cPanel?

Ioncube loader should be installed and enabled on your Linux machine with cPanel before...

How to Install Joomla from Softaculous in cPanel?

Joomla is an open-source and a popular CMS. It is a very easy process to build a joomla template....

How to add IP Address on Ubuntu 18.04 using netplan?

We can configure IP Address on ubuntu 18.04 using Netplan. It is a different method to add IP...

How To Configure Redis Caching to Speed Up WordPress on Ubuntu 18.04?

Redis is an open-source in-memory data structure store. It can be used as a DB and cache. It...

How to change timezone from Joomla admin panel?

Changing timezone is very easy in Joomla. Please refer to the below steps to change timezone from...

  • 0 Users Found This Useful

Was this answer helpful?