4.3. Changing kernel command-line parameters for all boot entries

Prerequisites

• grubby utility is installed on your system.
• zipl utility is installed on your IBM Z system.

Procedure

• To add a parameter:

  # grubby --update-kernel=ALL --args="<NEW_PARAMETER>"

  For systems that use the GRUB boot loader and, on IBM Z that use the zIPL boot loader, the command adds a new kernel parameter to each /boot/loader/entries/<ENTRY>.conf file.

  • On IBM Z, update the boot menu:

    # zipl

• To remove a parameter:

  # grubby --update-kernel=ALL --remove-args="<PARAMETER_TO_REMOVE>"

  • On IBM Z, update the boot menu:

    # zipl

    注意

    There is no need to update boot menu for the systems using the GRUB boot loader.