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General Description 2-25
POST
POST (Power On Self-Test) is the self-diagnostic program stored in the system memory.
When you power on the server, the system automatically runs POST to check the mother board, ECC memory module, CPU
module, keyboard, and mouse. POST also displays messages of the BIOS setup utility, such as the start-up message, while in
progress.
With the factory setup of the server, the Bull logo appears on the display unit while POST is in progress. (To display the POST
check results, press Esc .)
NOTE:
You can set the POST check results to appear on the display unit without pressing Esc .
To do so, select "Enabled" for "Boot-time Diagnostic Screen" under the Advanced menu of the
BIOS SETUP utility.
The POST check results should be checked in the following cases.
„
When the server is used for the first time.
„
When the server appears to fail.
„
When the server beeps for many times between power-on and OS start-up.
„
When an error message appears on the display unit.
POST Execution Flow
The following describes the progress of POST in the chronological order.
IMPORTANT:
„
Do not make key entries or perform mouse operations while POST is in progress.
„
Some system configurations may display the message "Press Any Key" to prompt a key entry.
This message is driven by BIOS of an installed optional board. Make sure to read the manual
that comes with the optional board before any key entry.
„
Powering on the server, after you installed or removed an optional PCI board or moved it to
another slot, may display the message that indicates incorrect board configuration and suspend
POST.
In such a case, press F1 to continue POST. Board configuration can be made using the utility
described later.
1.
After a few seconds from power-on, POST starts checking the memory. The count message of the basic and
expansion memory appears at top left on the display unit screen. The memory check may takes a few minutes to
complete depending on the memory size of the server. Also, it may take approximately one minute for the screen
display to appear after rebooting the server.
2.
Some messages appear upon completion of the memory check. These messages appear to indicate that the system has
detected the CPU, baseboard management controller, keyboard, and mouse.
3.
After a few seconds, POST displays the following message prompting you to launch the BIOS SETUP utility stored
in the system memory of the server. This message appears at bottom left on the screen.
Press <F2> to enter SETUP, <F12> to Network
Launch the BIOS setup utility when you need to change the settings to meet the requirements for the server. As long
as the above message is not displayed with an error message, you don't have to launch the utility. (Ignore the message.
POST will automatically proceed.)
To launch the SETUP utility, press
F2 while the above message is displayed. See Chapter 4 for setup and parameters.
The server automatically restarts POST all over again when you exit the SETUP utility.