Specifications

Intel® Server Board S3420GPRX TPS Appendix C: POST Code Diagnostic LED Decoder
Revision 1.1
Intel order number E92065-001
127
Diagnostic LED Decoder
O = On, X=Off
Upper Nibble Lower Nibble
MSB LSB
Checkpoint
8h 4h 2h 1h 8h 4h 2h 1h
LED #7 #6 #5 #4 #3 #2 #1 #0
Description
0xBCh
O X O O
O O X X Enabling / configuring a removable media device
Boot Device Selection (BDS)
0xD0 O O X O X X X X Entered the Boot Device Selection phase (BDS)
0xD1 O O X O X X X O Return to last good boot device
0xD2 O O X O X X O X Setup boot device selection policy
0xD3
O O X O
X X O O Connect boot device controller
0xD4 O O X O X O X X Attempt flash update boot mode
0xD5
O O X O
X O X O
Transfer control to EFI boot
0xD6
O O X O
X O O X
Trying to boot device selection
0xDF O O X O O O O O
Reserved for boot device selection
Pre-EFI Initialization (PEI) Core
0xE0h O O O X X X X X Entered Pre-EFI Initialization phase (PEI)
0xE1h
O O O X X X X O
Started dispatching early initialization modules
(PEIM)
0xE2h
O O O X X X O X
Initial memory found, configured, and installed
correctly
0xE3h O O O X X X O O Transfer control to the DXE Core
Driver eXecution Environment (DXE) Core
0xE4h O O O X X O X X
Entered EFI driver execution phase (DXE)
0xE5h O O O X X O X O
Started dispatching drivers
0xE6h O O O X X
O O X
Started connecting drivers
DXE Drivers
0xE7h O O O X O O X O Waiting for user input
0xE8h
O O O X
O X X X Checking password
0xE9h
O O O X
O X X O Entering BIOS setup
0xEAh O O O X O O X X Flash Update
0xEEh O O O X O O X X
Calling Int 19. One beep unless silent boot is
enabled.
0xEFh O O O X O O X O
Unrecoverable boot failure
Pre-EFI Initialization Module (PEIM) / Recovery
0x30h X X O O X X X X
Crisis recovery has been initiated because of a user
request
0x31h X X O O X X X O
Crisis recovery has been initiated by software
(corrupt flash)
0x34h X X O O X O X X
Loading crisis recovery capsule
0x35h X X O O X O X O
Handing off control to the crisis recovery capsule
0x3Fh X X O O O O O O
Crisis recovery capsule failed integrity check of
capsule descriptors
Runtime Phase / EFI Operating System Boot
0XF2h O O O O X X O X
Signal that the OS has switched to virtual memory
mode
0XF4h O O O O X O X X Entering the sleep state