[coreboot] password

Rudolf Marek r.marek at assembler.cz
Fri Apr 9 12:45:00 CEST 2010

Hi Ron,

Thinkpads has special EEPROM for password 24RF08


Hook it and use that software to read it. I think it is stored as scan codes.

WARNING! this eeprom has hardware bug! Avoid ANY "write short" transactions. All 
transactions which just sends  Start cond, addr and R/W, Stop cond will not 
work! There is a bug in state machine which causes to ignore the stop conditions 
making the further probing as chip writes. The BIOS is very very pissed off if 
the EEPROM is corrupted.

Cleaning the eeprom is not enough because it sets the HDD password! Carefull 
with that!

Check also:

recovering bios passwords

For X300 above is also true, I think you can check the testpoints

Good luck,



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