The easiest way to configure the boot loader in your openSUSE system is to use the YaST module. In the YaST Control Center, select Figure 17-1, this shows the current boot loader configuration of your system and allows you to make changes.. As in
Figure 17-1 Boot Loader Settings
Use the Section 17.1, Booting with GRUB first.tab to edit, change and delete boot loader sections for the individual operating systems. To add an option, click . To change the value of an existing option, select it with the mouse and click . To remove an existing entry, select it and click . If you are not familiar with boot loader options, read
Use thetab to view and change settings related to type, location and advanced loader settings.
Access advanced configuration options from the drop-down menu that opens after you click on Section 17.1, Booting with GRUB for details). You can also delete the existing configuration and or let YaST . It is also possible to write the configuration to disk or reread the configuration from the disk. To restore the original Master Boot Record (MBR) that was saved during the installation, choose .. The build-in editor lets you change the GRUB configuration files (see
To change the system that is booted by default, proceed as follows:
Select the desired entry from the list.
Clickto activate these changes.
To modify the location of the boot loader, follow these steps:
Select thetab and then choose one of the following options for :
This installs the boot loader in the MBR of the first disk (according to the boot sequence preset in the BIOS).
This installs the boot loader in the boot sector of the / partition (this is the default).
This installs the boot loader in the boot sector of the /boot partition.
This installs the boot loader in the extended partition container.
Use this option to specify the location of the boot loader manually.
Clickto apply your changes.
The boot loader does not boot the default system immediately. During the time-out, you can select the system to boot or write some kernel parameters. To set the boot loader time-out, proceed as follows:
Change the value ofby typing in a new value and clicking the appropriate arrow key with your mouse, or by using the arrow keys on the keyboard.
Clicktwice to save the changes.
Using this YaST module, you can also set a password to protect booting. This gives you an additional level of security.
Activate theoption with a click and type in your twice.
Clicktwice to save the changes.
If your computer has more than one hard disk, you can specify the boot sequence of the disks to match the BIOS setup of the machine (see Section 17.1.2, The File device.map). To do so, proceed as follows:
If more than one disk is listed, select a disk and clickor to reorder the displayed disks.
Clicktwo times to save the changes.
Advanced boot options can be configured via. Normally, it should not be necessary to change the default settings.
Activates the partition that contains the boot loader. Some legacy operating systems (such as Windows 98) can only boot from an active partition.
Replaces the current MBR with generic, operating system independent code.
Sets GRUB in debug mode where it displays messages to show disk activity.
Hides the boot menu and boots the default entry.
Starts the Trusted GRUB which supports trusted computing functionality.
Enables or disables acoustic signals in GRUB.
Path to the graphics file used when displaying the boot screen.
If your machine is controlled via a serial console, activate this option and specify which COM port to use at which speed. See info grub or http://www.gnu.org/software/grub/manual/grub.html#Serial-terminal for details.
Set the boot loader type in. The default boot loader in openSUSE is GRUB. To use LILO, proceed as follows:
WARNING: LILO is unsupported
Using LILO is not recommended—it is unsupported on openSUSE. Only use it in special cases.
For, select .
In the dialog box that opens, select one of the following actions:
Have YaST propose a new configuration.
Have YaST convert the current configuration. When converting the configuration, some settings may be lost.
Write a custom configuration. This action is not available during the installation of openSUSE.
Load your own /etc/lilo.conf. This action is not available during the installation of openSUSE.
Clicktwo times to save the changes
During the conversion, the old GRUB configuration is saved to the disk. To use it, simply change the boot loader type back to GRUB and choose. This action is available only on an installed system.
NOTE: Custom Boot Loader
To use a boot loader other than GRUB or LILO, select. Read the documentation of your boot loader carefully before choosing this option.