POST Keys
The POST keys, if pressed after the keyboard POST indicator displays and before the last POST indicator
(speaker) displays, cause the system to start services or to initiate service mode boots used for
configuring the system and diagnosing problems. The keys are described below:
Note: The program function keys (F1-F12) on a keyboard attached to the system unit are no longer used
and will be ignored during POST. After the keyboard POST indicator displays, you must use the
numeric number keys to enter input.
1 Key
The numeric 1 key, when pressed during POST, starts the System Management Services (SMS) interface.
5 Key
The numeric 5 key, when pressed during POST, initiates a system 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.
Chapter 1. Reference Information 7
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