Diagnostic Utility - IBM xSeries 450 Planning And Installation Manual

5. Exit the Setup program and save the changes. If you made any changes while
in the menus, the system will reboot. If you made no changes, you will be
returned to the EFI boot menu.
Note: When adding or replacing memory to the xSeries 450, you may need to
run the Setup program for the new memory to work.
Tips :
When memory is added, it should be detected automatically but may need
two reboots to complete the process.
When replacing faulty memory, you will need to re-enable the faulty DIMM(s)
by running Setup, saving the system changes and rebooting again.
To ensure your memory configuration is correct, enter Configuration and Set
Up utility and verify that the settings in the Memory Configuration option
match you configuration.

4.1.4 Diagnostic utility

The ROM-based diagnostics package may be started from the EFI Boot
Manager by selecting the Diagnostic Utility . Alternatively, you can start it using
the command amidiag from the MemMap filesystem (in our example, it was fs1:).
The Diagnostic utility looks similar to the IA-32 ROM version.
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