Specifying kernel parameters
You can use several interfaces to specify kernel parameters.
- Including kernel parameters in a boot configuration
- Adding kernel parameters when booting Linux
- z/VM® reader only: Using a kernel parameter file
Avoid parameters that break GRUB 2
This section applies to all interfaces for specifying kernel parameters, except the kernel parameter file that you can use when booting from the z/VM reader.
During the boot process, first the auxiliary kernel and GRUB 2 are started. GRUB 2 then proceeds to start the target SUSE Linux Enterprise Server 12 SP4 kernel .
The auxiliary kernel and the target SUSE Linux Enterprise
Server 12 SP4 kernel use
the same set of kernel parameters. Be cautious when making changes
to the parameters in the boot configuration.
- New or changed parameters might adversely affect the auxiliary kernel.
- Replacing the entire kernel parameter line eliminates parameters that are required by the auxiliary kernel.