IBM ThinkPad 2644, Руководство по техническому обслуживанию аппаратной части

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FRU REPLACEMENT NOTICES
To save the original serial number, do the following:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.60 and restart the computer.
2. Select 1. Set System Identification from the main
menu.
3. Select 2. Read S/N data from EEPROM.
Each serial number is displayed with its device type. Write
down the system unit serial number. The device type
designations for each serial number are as follows:
20: System unit serial number
40: System board serial number
To restore the serial number after you have replaced the
system board, do the following:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.60 and restart the computer.
2. Select 1. Set System Identification from the main
menu.
3. Select 1. Add S/N data from EEPROM.
Follow the instruction on the screen.
Note
The system unit serial number is written in the label
attached on the bottom of the computer.
UUID:
The Universally Unique IDentifier (UUID) is a
128-bit number uniquely assigned to your computer at
production and stored in the EEPROM of your system
board. The algorithm that generates the unique number is
designed to provide unique IDs until the year A.D. 3400.
Consequently, no two computers in the world have the
same number.
When you replace the system board, you must set the
UUID on the new system board as follows:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.60 and restart the computer.
2. Select 4. Assign UUID from the main menu.
A new UUID is created and written. If a valid UUID
already exists, it is not overwritten.
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ThinkPad 570 Hardware Maintenance Manual