How to rebuild the initial ramdisk image in Red Hat Enterprise Linux

Solution Verified - Updated -

Issue

  • How to rebuild the initial ramdisk image in Red Hat Enterprise Linux
  • How to remake or recreate the initrd or initramfs
  • The /etc/lvm/lvm.conf and root file system resides on a logical volume. How to ensure the changes are applied upon rebooting?
  • The /etc/multipath.conf and my root file system resides on a multipath device. How to ensure the changes are applied upon rebooting?
  • The module options in /etc/modprobe.conf or /etc/modprobe.d/ have been modified. How to ensure the changes are applied upon rebooting?

Environment

  • Red Hat Enterprise Linux (RHEL) 3
  • Red Hat Enterprise Linux (RHEL) 4
  • Red Hat Enterprise Linux (RHEL) 5
  • Red Hat Enterprise Linux (RHEL) 6
  • Red Hat Enterprise Linux (RHEL) 7
  • initrd / initramfs image

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