To start YaST:
Do one of the following, depending on the desktop you are using:
Enter the password for the root user.
The configuration must be performed with root privileges, because only the system administrator is entitled to change Linux system files.
The YaST Control Center window appears.
To change the language of YaST and your entire system:
In the YaST Control Center, click.
Select the language you want, then click.
Clickto exit the YaST Control Center.
Log out of your computer, then log in again and restart YaST to activate the new language setting.