Order In Which The Tests Are Performed; An Example Of An Error Code Message; Post Checkpoint Codes - HP X Class 500/550MHz Reference Manual
Personal workstation
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Also See for X Class 500/550MHz:
- User manual (86 pages) ,
- Administrator's manual (118 pages) ,
- Installation manual (60 pages)
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Order in Which the Tests Are Performed
Each time the system is powered on, or a reset is performed, the POST is executed. The
POST process verifies the basic functionality of the system components and initializes
certain system parameters.
The POST starts by displaying a graphic screen of the HP Personal Workstation's logo
when the Personal Workstation is restarted. If you wish to view the POST details, press
to get the HP Summary Screen.
If the POST detects an error, the error message are displayed inside a view system errors
screen, in which the error message utility (EMU) not only displays the error diagnosis, but
the suggestions for corrective action (refer to the section "Error Message Summary" in this
chapter for a brief summary). Error codes are no longer displayed.
Devices, such as memory and newly installed hard disks, are configured automatically. The
user is not requested to confirm the change. Newly removed hard disks are detected, and
the user is prompted to confirm the new configuration by pressing
the POST does not detect when a hard disk drive has been otherwise changed.
During the POST, the BIOS and other ROM data is copied into high-speed shadow RAM.
The shadow RAM is addressed at the same physical location as the original ROM in a
manner which is completely transparent to applications. It therefore appears to behave as
very fast ROM. This technique provides faster access to the system BIOS firmware.
An example of an Error Code Message
This example explains the different coding messages that appear in the lower left corner of
the screen when the POST detects an error during start-up.
For example, if the error 0101 - 52 is displayed.
0101
Post Error Code failure. This error code is accompanied by a short
message. For this example, the message "keyboard error" is displayed. A
table listing the error codes, causes and symptoms is in the section "Error
Message Summary" in this chapter
52
Post Checkpoint Code. This checkpoint code indicates that a test has failed
at this stage of the POST. A table listing the error codes, and POST routine
descriptions is in the section "POST Checkpoint Codes."
POST Checkpoint Codes
The following table lists the POST checkpoint codes written at the start of each test.
Checkpoint Code
02h
03h
Chapter 5
POST Routine Description
Verify Real Mode
Disable Non-Maskable Interrupt (NMI)
Tests and Error Messages
Order in Which the Tests Are Performed
. Note, though, that
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