Why after updating the system to RHEL 7.3, system does not boot with RHEL 7.2 or RHEL 7.3 kernel or any of the previous kernels ?

Solution Unverified - Updated -

Issue

  • Why after updating the system to RHEL 7.3, system does not boot with RHEL 7.2 or RHEL 7.3 kernel or any of the previous kernels ?

Environment

  • Red Hat Enterprise Linux 7.2
  • yum update to RHEL 7.3
  • System fails to boot using RHEL 7.2 kernel after the update as well

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