Including module parameters in a boot configuration

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Ubuntu 22.04 LTS LPAR mode z/VM guest KVM guest

Module parameters for modules that are required early during the boot process must be included in the boot configuration.

About this task

Ubuntu Server uses an initial RAM disk when booting.

Ubuntu Server runs update-initramfs and zipl for you when saving changes you have made.

Procedure

Perform these steps to provide module parameters for modules that are included in the initial RAM disk:
  1. Make your configuration changes, for example with the chzdev command.
  2. If Ubuntu Server does not perform this task for you:
    1. Run update-initramfs to create an initial RAM disk that includes the module parameters.
      For example:
      # update-initramfs -k all -u
      Tip: Use -k all to ensure that all kernel and initrd combinations on the system are updated.
    2. Run zipl to include the new RAM disk in your boot configuration.