After installing a second CPU, NT still recognizes only one CPU processor. Why? How it's work?

[Ayman Altounji]

When boot compaq see 2 CPU PIII 500 cache 512 , but NT still recognizes only one CPU processor. System NT 4.0 Service Pack4.
THANK YOU.

[Ayman Altounji]

Install the new processor(s) as noted in the manual for the system itself or that comes with the chips.

Then configure the server hardware to the correct the "APIC Mode" settings. You must start System Configuration and press 'CTRL a' at the first menu after selecting F10 during boot. This activates "Advanced Mode". Then enter System Configuration itself and follow the prompts to complete a basic configuration load. Select to "Review" the settings and then pick "View/Edit Details" from the menu. Look down the list to find "APIC Mode". Press enter on this selection and select "Full Table, Mapped" (or "Full Table" if only choice, depends on specific system). Once this has been done, exit and save changes.

The next step is to load the Multiprocessor HAL on NT. This is best accomplished with the latest Compaq NT SSD (for 3.51 or 4.0 specifically) as this utility will do a more reliable job of identifying the correct HAL for the system. Simply run SETUP.EXE from the SSD disk 1 and select the HAL upgrade (you may also install other drivers if desired, do NOT force all drivers to load as some may not work on your system).

[Ayman Altounji]

From looking at the MS site, you need the files from the correct service pack that you are running with. How does the SSD know which ones to use? Can I download the latest SSD???

[Ayman Altounji]

I am considering rebuilding NT4 on a dual 233 Proliant 1600 (E34 bios). I am wondering if the generic MS HAL would recognise the dual processor system and run reliably. (In our remote location reliability counts more than speed.)
The reason I ask is that I understand NT SP4 can create a problem with the Compaq HAL and I have just had major problems with Exchange SP4, and had to resort to restore from tape etc.

[Ayman Altounji]

Normally, the SSD will spot the difference in HAL versions as compared to the service pack loaded...

The SSD is here:

NT 4.0 SSD