In many other distribution, they provide various ways to do this and to ensure that it is correctly configured.  In SuSE and OpenSuSE, they provided the command insserv for this purpose.

# insserv –r hwscan

If you would like to stop the scanning of hardware configuration at boot time.  Normally, this is turned on but when you have the server configured and running optimally, you may want to disable it to ensure a faster boot up time.  To start it again at boot up time, just

# insserv hwscan

Of course, YAST also provide this, go to YaST Control Center –> System –> System Services (Runlevel).

Where you can enable/disable the services.

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How to start services automatically at boot?

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YaST provides a extremely easy way for system administrators to manage which services run at boot. The YaST Runlevel Editor module is easy to understand and gives you important information about each service. You can choose to start or stop a process with nothing more than a mouse click.

To view what are the what services that are currently running, you can open the Runlevel Editor module from the YaST System page. It will display a list of all the available services. If you change the configuration file for a particular service, you usually have to stop and restart the service to use the new configuration. For example, when making changes to the X server, it is often worthwhile to change from Runlevel 5 to Runlevel 3 to test the changes, then switch back to re-enable the display manager. This way, if you make a mistake, you can fix it and get it right without having to reboot every time.

e.g. To stop, start, or restart any service, open a shell as the SuperUser. To see if your ALSA sound server is running, type the following:

/etc/init.d/alsasound status

The script will report its status. It should report

ALSA sound driver loaded.             running

To stop and restart the service, type

/etc/init.d/alsasound restart

and the following should appear:

Shutting down sound driver               done

Starting sound driver:  via82xx          done

Restoring the previous sound setting     done

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Manually Starting and Stopping Services in Suse/OpenSuse

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