IBM 6C4 - Manual (Page 118)

Running the Online Diagnostics in Maintenance Mode
Maintenance mode runs the online diagnostics using the customer’s version of the AIX
operating system. This mode requires that all activity on the operating system be
stopped so the online diagnostics have most of the resources available to check. All of
the system resources except the SCSI adapters, memory, processor, and the disk drive
used for paging can be checked.
Error log analysis is done in maintenance mode when you select the Problem
Determination option on the DIAGNOSTIC MODE SELECTION menu.
The shutdown -m command is used to stop all activity on the AIX operating system
and put the operating system into maintenance mode. The diag command is then used
to invoke the diagnostic controller so you can run the diagnostics. After the diagnostic
controller is loaded, follow the normal diagnostic instructions.
To run the online diagnostics in maintenance mode, you must be logged in to the
customer’s version of the AIX operating system as
root or superuser and use the
shutdown -m and diag commands. Use the following steps to run the online
diagnostics in maintenance mode:
1. Stop all programs except the AIX operating system (get help if needed).
2. Log in to the AIX operating system as root or superuser.
3. Enter the shutdown -m command.
4. When a message indicates the system is in maintenance mode, enter the diag
command.
Note: It may be necessary to set TERM type again.
5. When DIAGNOSTIC OPERATING INSTRUCTIONS display, follow the displayed
instructions to test the desired resources.
6. When testing is complete, use the F3 key to return to DIAGNOSTIC OPERATING
INSTRUCTIONS. Then press the F3 key again to return to the AIX operating
system prompt.
7. Press Ctrl-D to log off from root user.
100 pSeries 630 Model 6C4 and Model 6E4 User’s Guide