How to rebuild the initial ramdisk in linux rescue mode

Solution Verified - Updated -

Issue

  • How can i rebuild the initial ramdisk (initrd/initramfs) file?
  • Server will not boot, potentially due to an issue with initrd file
  • Server will not boot, potentially due to an issue with initramfs file

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • System can boot to rescue mode using bootable install media or a rescue disc

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