How to revert back to Red Hat Kernel if CentOS kernel was installed accidentally ?

Solution Verified - Updated -

Issue

  • How to revert back to Red Hat Kernel if CentOS kernel was installed accidentally ?
  • If the CentOS kernel was installed accidentally and was replaced by Red Hat shipped kernel, will it be supported ?

Environment

  • Red Hat Enterprise Linux [All versions]
  • kernel
  • CentOS

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