FRU REPLACEMENT NOTICES
2. From the main menu, select 1. Set System
Identification.
3. Select 1. Add S/N data from EEPROM.
Follow the instructions on the screen.
Note: The serial number of the system unit 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.
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.
36 ThinkPad 600X Hardware Maintenence Manual
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