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.

  • 0 Users Found This Useful

Was this answer helpful?

Related Articles

Will internal traffic between two VPS viz. a Database Server and a Web Server be counted in my bandwidth usage?

Yes it will. The traffic will be counted in the bandwidth usage of your VPS. Even if you use...

How to setup Database Map tool from WHM Panel?

cPanel provide a feature called Database Map tool. You can provide ownership of databases and...

How to Upgrade PHP Version in cPanel/WHM Server?

Following article will assist you to upgrade PHP version in cPanel/WHM server. This article is...

What are the benefits of CloudLinux?

There are numerous advantages and benefits of CloudLinux OS and we will discuss it in this...

How to Install Tomcat 7 on Centos?

Tomcat is an open-source web server that is built in Java Servlet and JavaServer Pages...