POST Indicators
POST indicators indicate tests that are being performed as the system is preparing to
load the operating system. The POST indicators are words that display on the system
console. Each time that the system starts a different step in the POST, a POST
indicator word appears on the console. Each word is an indicator of the tests that are
being performed.
The POST screen displays the following words:
Memory
Memory test
Keyboard
Initialize the keyboard and mouse. The time period for pressing a key
to access the System Management Services, or to initiate a service
mode boot is now open. See “POST Keys” for more information.
Network
Self-test on network adapters
SCSI
Adapters are being initialized
Speaker
Sounds an audible tone at the end of POST
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 CEC drawer
are not used and will be ignored. After the
keyboard
POST indicator displays,
you must use the numeric number keys.
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.
Note: This is the preferred method of loading standalone diagnostics from CD-ROM.
The default boot sequence is:
1. Diskette (if installed)
2. CD-ROM (if installed)
Chapter 1. Reference Information
17
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