Dell PowerEdge SC 430 - Manual (Page 38)

l System ROM
l Advanced Programmable Interrupt Controllers (APIC)
l Integrated PCI devices (such as NICs) and SCSI controllers
l PCI expansion cards
At start-up, the BIOS identifies the components that require address space. The BIOS dynamically calculates the amount of reserved address space required.
The BIOS then subtracts the reserved address space from 4 GB to determine the amount of usable space.
l If the total installed system memory is less than the usable space, all installed system memory is available for use only by the operating system.
l If the total installed system memory is equal to or greater than the usable address space, a small portion of installed memory is available for use by the
operating system.
Installing a Memory Module
1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See " Opening the System " in "Troubleshooting Your System."
3. Press on the securing clip at each end of the memory module connector. See Figure 5 -1 .
4. Align the memory module's edge connector with the alignment key in the connector.
The memory module connector has an alignment key that allows the memory module to be installed in the connector in only one way.
5. Applying even pressure to both ends of the module, insert the module into the connector and carefully press the module into place.
Figure 5-1. Installing a Memory Module
6. Pull up on the securing clips to lock the module into place.
If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.
When the memory module is properly seated in the connector, the securing clips on the memory module socket should align with the securing clips on
the other connectors with memory modules installed.
7. Close the system. See " Closing the System " in "Troubleshooting Your System."
8. Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.
The system detects that the new memory does not match the existing configuration information and generates the following message:
The amount of system memory has changed.
Strike the F1 key to continue, F2 to run the setup utility
9. Press to enter the System Setup program and check the value for Memory Info. See your User's Guide for detailed information.
The system should have changed the value for Memory Info to reflect the newly installed memory. Verify the new value. If it is correct, skip to step 13 .
10. If the memory value is incorrect, turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
11. Open the system. See " Opening the System " in "Troubleshooting Your System."
12. Ensure that the installed memory modules are seated properly in their connectors, and repeat step 6 through step 9 .
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system.
Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the
computer and protecting against electrostatic discharge.