Some DISCLAIMERs are shown in updating microcode_ctl for Intel Broadwell-EP/EX

Solution Unverified - Updated -


  • The following messages are shown in updating microcode_ctl package.
DISCLAIMER:Microcode update for Intel Broadwell-EP/EX (BDX-ML B/M/R0; family 6, model 79,
DISCLAIMER:stepping 1; CPUID 0x406f1) CPUs is disabled as it may cause system instability.
DISCLAIMER:Please refer to /usr/share/doc/microcode_ctl/caveats/06-4f-01_readme
DISCLAIMER:and /usr/share/doc/microcode_ctl/README.caveats for details.


  • Red Hat Enterprise Linux 7
  • kernel-3.10.0-894 or later
  • microcode_ctl-2.1-47.el7 or lager

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