Startup diagnostics on the host use BIOS power-on self-test (POST), which executes whenever the blade host is powered on or reset. The table below lists events that can occur during BIOS POST, and specifies whether the event prevents the host from booting.
For additional information about BIOS and BIOS POST, see the topics listed under BIOS Reference.
Event |
Cause |
Boot Continues? |
---|---|---|
User password violation |
Attempt to enter password fails three times |
No |
Setup password violation |
Attempt to enter password fails three times |
No |
Processor therm trip |
Depending on server module type:
|
Yes |
Correctable ECC |
Correctable ECC error detected |
N/A |
Uncorrectable ECC |
Uncorrectable ECC error detected |
N/A |
No system memory |
No physical memory detected in the system |
No |
No usable system memory |
All installed memory has experienced an unrecoverable failure |
No |
Hard-disk controller failure |
No disk controller found |
Yes |
Keyboard failure |
Keyboard cannot be initialized |
Yes |
Boot media failure |
No removable boot media is found |
Yes |
No video device |
No video controller is found |
No |
Firmware (BIOS) ROM corruption |
BIOS checksum fails and the boot block is not corrupted |
No |
Memory initialization |
Memory sizing is occurring |
N/A |
Secondary processor(s) initialization for X8400, X8420, X8440 Server Modules |
POST code = 8609h |
N/A |
User-initiated system setup |
Depending on server module type:
|
N/A |
Option ROM initialization |
When BIOS initializes device Option ROMs |
N/A |
Video initialization |
When BIOS initializes video device |
N/A |
Keyboard controller initialization |
When BIOS initializes keyboard |
N/A |
Embedded controller/management controller initialization |
POST code = 8601h, BMC initialization |
N/A |
Starting O/S boot process |
POST code = 086ACh |
N/A |
Primary processor initialization |
POST code = 8608h |
N/A |
Front panel NMI/diagnostic interrupt |
NMI button pressed |
N/A |
Initiated by hard reset |
Boot process started by hard reset |
N/A |
Initiated by warm reset |
Boot process started by warm reset |
N/A |
User-requested PXE boot |
F12 has been pressed |
N/A |
No bootable media |
Nothing to boot from |
No |
PXE server not found |
F12 key was pressed but BIOS fails to boot from PXE server |
No |
Option ROM space exhausted |
BIOS cannot copy an option to the memory between C0000h - EFFFFh |
Yes |
SAS hard drive OK-to-Remove indicator |
OK to remove the hard drive |
N/A |
SAS hard drive insertion indicator on X8400, X8420, and X8440 Server Modules |
Notify SP to turn off the Ready-to-Remove indicator |
N/A |
X8400, X8420, X8440 Server Module Memory Configuration Events |
||
Node-# memory configuration mismatch |
DIMMs within the specified node are not all registered DIMMs |
Yes |
Node-# memory configuration mismatch |
DIMMs within the specified node are not properly paired |
Yes |
Node-# memory configuration mismatch |
DIMMs within the specified node failed the SPD checksum |
Yes |
Node-# memory configuration mismatch |
DIMMs within the specified node do not have the same module type (buffer) |
Yes |
Node-# memory configuration mismatch |
DDR-1 and DDR-2 types of DIMMs are mixed within the specified node |
Yes |
Node-# memory configuration mismatch |
DIMMs within the specified node to not have the same Cas Latency |
Yes |
Node-# memory configuration mismatch |
DIMM Trc and Trfc (SPD bytes 41 and 42) are mismatched within the specified node |
Yes |
Node-# paired DIMM mismatch |
SPD checksum of both DIMMs forming a pair did not match |
Yes |
Node-# DIMMs manufacturer mismatch |
DIMMs from different manufacturers are in the specified node |
Yes |