Appendix F Bios Rewrite Procedures - Toshiba Satellite U500 Maintenance Manual

Appendix F BIOS rewrite procedures

Appendix G
Appendix F
This Appendix explains how to rewrite the system BIOS program when you update the system BIOS.
Tools
To rewrite the BIOS, you need the following tool:
Bootable USB key for the computer that has renewed BIOS data.
Rewriting the BIOS
1. Set the system to boot mode.
2. Turn off the power to the computer.
3. Remove the external cable and PC card, connect the USB key which has the latest BIOS
document to t he system.
4. Turn on the power with Esc key pressing down, and choose boot from USB device.
5. Enter to the BIOS document and execute the "UBIOS.bat".
6. The BIOS rewriting starts.
7. When the process is completed, the system automatically shutdown.
NOTE: 1. Connect the AC adapter to the computer when you rewrite the BIOS.
2. Do not turn off the power while you are rewriting the BIOS. If the rewrite fails, it might be
impossible to start up the computer.
3 If you fail to rewrite BIOS, then when you next turn on the power, a message may be
displayed that the contents of the BIOS have been erased. In this case, insert the BIOS
rewriting disk and the BIOS will be rewritten.
Satellite U500/PORTEGE M900D/Dynabook Maintenance Manual [CONFIDENTIAL]
BIOS rewrite procedures
Appendices
F-1