IBM Types 2193, Hardware Maintenance Manual

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BIOS-contained Model Number and Serial Number
The model number and serial number information is stored in
BIOS ROM and displayed in the “Model Information” of BIOS
Setup main menu. If a repair is completed by replacing the
system board or installing a new BIOS ROM, then you need
to enter the original system model number and serial number
in the new BIOS ROM.
To enter the model number and serial number into BIOS:
1. Prepare a bootable DOS diskette with VPD.EXE files.
2. Insert the diskette and boot from drive A.
WARNING: Do not boot with any memory related driver
such as HIMEM.SYS, EMS.SYS ….
3. At the DOS prompt, type A:>VPD then press Enter.
You will be asked if you want to update the serial
number, type Y to continue. When the screen shows:
Serial Number:
Enter the serial number and press Enter to continue.
You can type a maximum of 7 characters (without
spaces).
Follow the instructions on the screen to complete the
procedure.
4. Type A:>VPD and press Enter to display and verify your
input model number and serial number information.