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Checkpoint
MSB
8h
LED
#7
0xEEh
1
0xEFh
1
Pre-EFI Initialization Module (PEIM)/Recovery
0x30h
0
0x31h
0
0x34h
0
0x35h
0
0x3Fh
0
Runtime Phase/EFI Operating System Boot
0XF2h
1
0XF4h
1
0XF5h1
1
0XF8h
1
Progress Code
0XF9h
1
0xFAh
1
150
Table 14. Diagnostic LED POST Code Decoder
Diagnostic LED Decoder
1 = On, 0= Off
Upper Nibble
4h
2h
1h
#6
#5
#4
1
1
0
1
1
0
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
0
0
1
Lower Nibble
LSB
8h
4h
2h
1h
#3
#2
#1
1
1
0
0
1
1
0
1
0
0
0
0
0
0
0
1
0
1
0
0
0
1
0
1
1
1
1
1
0
0
1
0
0
1
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
1
®
Intel
Server System SR1695GPRX Service Guide
Description
#0
Calling Int 19. One beep
unless silent boot is
enabled.
Unrecoverable boot failure
Crisis recovery has been
initiated because of a user
request
Crisis recovery has been
initiated by software
(corrupt flash)
Loading crisis recovery
capsule
Handing off control to the
crisis recovery capsule
Crisis recovery capsule
failed integrity check of
capsule descriptors
Signal that the OS has
switched to virtual
memory mode
Entering the sleep state
Exiting the sleep state
Operating system has
requested EFI to close
boot services has been
cancelled
Resetting the keyboard
Disabling the keyboard
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