How to regenerate initramfs and vmlinuz for rescue on RHEL 8 or later

Solution Verified - Updated -

Issue

  • Needs to regenerate initramfs and vmlinuz for rescue after upgrading kernel.
  • Can't find /etc/kernel/postinst.d/51-dracut-rescue-postinst.sh.

Environment

  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

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