To change the root password on SUSE / OpenSUSE Linux, you can use the passwd command. Here’s how to do it:
- Log in as root: Log in to the system as the root user.
 - Run the 
passwdcommand: Run the following command in the terminal: 
passwd
- Enter the new password: You will be prompted to enter the new password. Enter the new password and press enter.
 - Confirm the new password: You will be prompted to confirm the new password by entering it again. Enter the new password again and press enter.
 - Verify the password change: Log out and log back in as the root user to verify that the password has been changed.
 
Note: It’s important to choose a strong and secure password to protect your system and sensitive data.