Index: HDDefs.h
===================================================================
diff -u -r2ec1ba224e53f264c43e61c226aca5618b20984f -r6b86c55c480f9cd1fec87a8d6bbcb79c1969129e
--- HDDefs.h	(.../HDDefs.h)	(revision 2ec1ba224e53f264c43e61c226aca5618b20984f)
+++ HDDefs.h	(.../HDDefs.h)	(revision 6b86c55c480f9cd1fec87a8d6bbcb79c1969129e)
@@ -53,6 +53,7 @@
 {
     POST_STATE_START = 0,                               ///< Start initialize & POST mode state
     POST_STATE_FW_INTEGRITY,                            ///< Run firmware integrity test state
+    POST_STATE_AC,                                      ///< Check HD has AC power - power off if not
     POST_STATE_WATCHDOG,                                ///< Run watchdog test state
     POST_STATE_SAFETY_SHUTDOWN,                         ///< Run safety shutdown test state
     POST_STATE_RTC,                                     ///< Run RTC test state