Microcode Update, What is a microcode update?

Microcode Update

What is a microcode update?

As there are no drivers for processors, Intel offers the possibility from the P6 family (Pentium Pro) on to update the command set (microcode) of the processor. This enables minor errors to be corrected and the performance to be increased.

To guarantee the best possible performance and error-free operation, Intel recommends updating the microcode for every new processor. Intel refers to the use of the processor without microcode updates as operation outside the specifications.

Safety for processor on Fujitsu Siemens Computers mainboards

If the processor uses an old or incorrect microcode, error-free operation cannot be ensured. Fujitsu Siemens Computers has therefore implemented a function on its mainboards that interrupts the booting process if no suitable microcode is available for the installed processor. The output error message is

Patch for installed CPU not loaded. Please run the bios flash update diskette.

This message appears until the microcode update has been carried out. If the computer is nevertheless operated without a microcode update, error-free operation is not ensured.

When should a microcode update be carried out?

A microcode update should be carried out after the installation of a new processor.

In contrast to the BIOS update, only an updated version of the processor command set is stored. The system BIOS remains unaffected by this.

Microcode update under DOS with bootable microcode update floppy disk - brief description

►Download the update file from out website to your PC.

►Insert an empty floppy disk (1.44 Mbyte).

►Run the update file under DOS (e.g. 1961101.EXE).

►A bootable update floppy disk is created. Leave the floppy disk in the drive.

►Restart the PC.

►Follow the instructions on screen.

To determine whether the latest microcode update has been loaded, the so-called Patch-ID of the processor can be read out.

►Press the F1 key in the BIOS Setup.

The entry CPU / Patch ID is shown on the displayed information page.

A list with the current processors and the related Patch-IDs is available on the Internet.

i	If the processor is not recognised, you also require the microcode update tool for
	processors of the P6 family.

26 - English

A26361-D1961-Z120-1-7419, edition 2