Changing the root password in Linux is an essential step in maintaining the security of your system. To change the root password, follow these steps:

1. Log in to your Linux system as the root user or switch to the root user using the command su -.
2. Use the command passwd to change the root password. You will be prompted to enter the new password twice.
3. After entering the new password, it will be updated, and you will receive a confirmation message.
4. Logout from the root user account and login again with the new password to ensure the changes have taken effect.

It is crucial to regularly change your root password and choose a strong, unique password to enhance the security of your Linux system.