Rebuilding the initial RAM disk image

SUSE Linux Enterprise Server 15 SP5 LPAR mode z/VM guest KVM guest

Configuration changes might apply to components that are required in the boot process before the root file system is mounted. Such changes might prevent the root file system from being mounted.

SUSE Linux Enterprise Server provides such components and their configuration through an initial RAM disk.

Procedure

Perform these steps to make configuration changes for components in the initrd take effect:

  1. Issue dracut -f to update the initial RAM disk of your target kernel.
  2. Issue grub2-install to update the initial RAM disk of the auxiliary kernel and to rewrite the zipl boot record.