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Appendix
6-3 Debug LED Codes
Code
Description
10
PEI Core is started.
11
Pre-memory CPU initialization is started.
12~14
Reserved.
15
Pre-memory North-Bridge initialization is started.
16~18
Reserved.
19
Pre-memory South-Bridge initialization is started.
1A~2A
Reserved.
2B~2F
Memory initialization.
31
Memory installed.
32~36
CPU PEI initialization.
37~3A
IOH PEI initialization.
3B~3E
PCH PEI initialization.
3F~4F
Reserved.
60
DXE Core is started.
61
NVRAM initialization.
62
Installation of the PCH runtime services.
63~67
CPU DXE initialization is started.
68
PCI host bridge initialization is started.
69
IOH DXE initialization.
6A
IOH SMM initialization.
6B~6F
Reserved.
70
PCH DXE initialization.
71
PCH SMM initialization.
72
PCH devices initialization.
73~77
PCH DXE initialization (PCH module specific).
78
ACPI Core initialization.
79
CSM initialization is started.
7A~7F
Reserved for AMI use.
80~8F
Reserved for OEM use (OEM DXE initialization codes).
90
Phase transfer to BDS (Boot Device Selection) from DXE.
91
Issue event to connect drivers.
Regular Boot