Intel SR1600UR Service Guide - Page 137

Pre-EFI Initialization PEI Core, Diagnostic LED Decoder

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Table 9. Diagnostic LED POST Code Decoder Diagnostic LED Decoder O=On; X=Off Checkpoint Upper Nibble MSB Lower Nibble LSB Description 8h 4h 2h 1h 8h 4h 2h 1h LED #7 #6 #5 #4 #3 #2 #1 #0 0xD6 0xD7 0xD8 0xD9 0xDA 0xDB 0xDC 0xDD 0xDE 0xDF O O X O X OOX Trying to boot device selection 6 O OX OX OOO Trying to boot device selection 7 O O X O O XXX Trying to boot device selection 8 O OX O O XXO Trying to boot device selection 9 O O X O O X OX Trying to boot device selection A O OX O O X OO Trying to boot device selection B O O X O O OX X Trying to boot device selection C O OX O O OX O Trying to boot device selection D O O X O O OOX Trying to boot device selection E O OX O O OOO Trying to boot device selection F Pre-EFI Initialization (PEI) Core 0xE0h 0xE1h 0xE2h 0xE3h O O O X X XXX Started dispatching early initialization modules (PEIM) O OOX X XXO Reserved for initialization module use (PEIM) O O O X X X OX Initial memory found, configured, and installed correctly O OOX X X OO Reserved for initialization module use (PEIM) Driver Execution Environment (DXE) Core (not accompanied by a beep code) 0xE4h 0xE5h 0xE6h O O O X X OX X Entered EFI driver execution (DXE) phase O OOX X OX O Started dispatching drivers O O O X X OOX Started connecting drivers DXE Drivers 0xE7h O OOX O OX O Waiting for user input Intel® Server System SR1600UR Service Guide 119

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Intel
®
Server System SR1600UR Service Guide
119
0xD6
O
O
X
O
X
O
O
X
Trying to boot device selection 6
0xD7
O
O
X
O
X
O
O
O
Trying to boot device selection 7
0xD8
O
O
X
O
O
X
X
X
Trying to boot device selection 8
0xD9
O
O
X
O
O
X
X
O
Trying to boot device selection 9
0xDA
O
O
X
O
O
X
O
X
Trying to boot device selection A
0xDB
O
O
X
O
O
X
O
O
Trying to boot device selection B
0xDC
O
O
X
O
O
O
X
X
Trying to boot device selection C
0xDD
O
O
X
O
O
O
X
O
Trying to boot device selection D
0xDE
O
O
X
O
O
O
O
X
Trying to boot device selection E
0xDF
O
O
X
O
O
O
O
O
Trying to boot device selection F
Pre-EFI Initialization (PEI) Core
0xE0h
O
O
O
X
X
X
X
X
Started dispatching early initialization
modules (PEIM)
0xE1h
O
O
O
X
X
X
X
O
Reserved for initialization module use
(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
Reserved for initialization module use
(PEIM)
Driver Execution Environment (DXE) Core (not accompanied by a beep code)
0xE4h
O
O
O
X
X
O
X
X
Entered EFI driver execution (DXE)
phase
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
Table 9. Diagnostic LED POST Code Decoder
Checkpoint
Diagnostic LED Decoder
Description
O=On; X=Off
Upper Nibble
Lower Nibble
MSB
LSB
8h
4h
2h
1h
8h
4h
2h
1h
LED
#7
#6
#5
#4
#3
#2
#1
#0