Replacing all kernel parameters in a boot configuration
Kernel parameters that you specify when booting can completely replace the kernel parameters in your boot configuration.
To replace all kernel parameters in your boot configuration, specify the new parameter string with a leading equal sign (=).
Note: This feature is intended for expert users who want
to test a set of parameters. By replacing all parameters, you might
inadvertently omit parameters that the boot configuration requires.
Furthermore, you might omit parameters other than kernel parameters
that Red Hat® Enterprise Linux®
8.6 includes
in the parameter string for use by the init process.
Read /proc/cmdline to find out with which parameters a running Linux instance was started .