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5 Key
The numeric 5 key, when pressed during POST, initiates a partition boot in service mode using the default
service mode, boot list.
This mode attempts to boot from the first device of each type found in the list. It does not search for other
bootable devices of that type if the first device is not bootable. Instead, it continues to the next device type
in the list. The firmware supports up to five entries in the boot list.
The default boot sequence is:
1. Diskette
2. CD-ROM
3. Hard file
4. Tape drive (if installed)
5. Network
a. Token ring
b. Ethernet
6 Key
The numeric 6 key works like the numeric 5 key, except that firmware uses the customized service mode
boot list, which can be set in the AIX service aids.
System Attention LED
The system attention LED, on the operator panel turns on when an entry is made in the service processor
error log, indicating that intervention or service is needed. The error entry gets transmitted to:
v the system-level error logs
v the operating system error log
v The service action event log in the Service Focal Point application (such as loss of surveillance from the
HMC to a logical partition)
If the system attention LED is turned on, you can access the system logs to determine the reason. The
method used to access your system logs depends on how your system is set up. For more information
about how to access the system logs, refer to "Accessing System Log Error Information" on page 72.
Chapter 1. Reference Information
27
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