Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


Based on the Cisco documentation at least below rack servers have CIMC secure boot enabled by default/the system automatically enables it after a firmware update.

ServerCIMC secure boot enabled by defaultNotes
Cisco UCS C220 M4/M5/M6(tick)
Cisco C240 M4/M5/M6(tick)
Cisco C480 M5/C480 M5 ML(tick)
Cisco C225 M6(tick)
Cisco C245 M6 (tick)
Cisco UCS C460 M4 (error)Automatically enabled after upgrade to CIMC firmware 2.2(3) or higher


Once CIMC secure boot has been enabled in these servers it is not possible to boot any OS other than a Cisco created OS with a valid Cisco OS signature.