Lenovo 8141, 8426, 8421, 8145, 8142, 8420, 8095 Appendix A. Updating system programs, System programs

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Appendix A. Updating system programs

This appendix contains information about updating system programs and how to recover from a POST/BIOS update failure.

System programs

System programs are the basic layer of software that is built into your computer. They include the power-on self-test (POST), the basic input/output system (BIOS) code, and the Setup Utility program. POST is a set of tests and procedures that is performed each time you turn on your computer. BIOS is a layer of software that translates instructions from other layers of software into electrical signals that the computer hardware can understand. You can use the Setup Utility program to view and change the configuration and setup of your computer.

Your computer system board has a module called electrically erasable programmable read-only memory (EEPROM, also referred to as flash memory). You can easily update POST, BIOS, and the Setup Utility program by starting your computer using a flash update diskette or by running a special update program from your operating system.

Lenovo might make changes and enhancements to the system programs. When updates are released, they are available as downloadable files on the World Wide Web (see the Quick Reference). Instructions for using the system program updates are available in a .txt file that is included with the update files. For most models, you can download either an update program to create a system-program-update (flash) diskette or an update program that can be run from the operating system.

Updating (flashing) BIOS from a diskette

1.Insert a system program update (flash) diskette into the diskette drive (drive A) in your computer. System program updates are available at http://www.lenovo.com/think/support on the World Wide Web.

2.Turn on the computer. If it is on already, you must turn it off and back on again. The update begins.

3.When you are prompted to select a language, press the number on your keyboard which corresponds to the language then press Enter.

4.When prompted to change the serial number, press Y.

5.Type in the seven character serial number of your computer then press Enter.

6.When prompted to change the machine type/model, press Y.

7.Type in the seven character machine type/model of your computer then press Enter.

8.Follow the instructions on the screen to complete the update.

Updating (flashing) BIOS from your operating system

Note: Due to constant improvements being made to the Web site, Web page content (including the links referenced in the following procedure) is subject to change.

1.From your browser, type http://www.lenovo.com/think/support in the address field and press Enter.

© Lenovo 2005. Portions © IBM Corp. 2004,2005.

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Contents User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page User Guide Types 8095, 8096, 8141 Types 8145, 8420, 8421 Page Contents Iv User Guide Conditions that require immediate action Important safety informationService General safety guidelinesExtension cords and related devices Power cords and power adaptersBatteries Plugs and outletsHeat and product ventilation CD and DVD drive safetyAdditional safety information Lithium battery noticeTo connect To disconnect Laser compliance statement Modem safety informationPower supply statement Information resources OverviewXiv User Guide Features Installing optionsMemory Operating systems, preinstalled varies by model type Specifications Available options Tools requiredHandling static-sensitive devices Installing external options Locating the connectors on the front of your computer Locating the connectors on the rear of your computer Obtaining device drivers Connector DescriptionRemoving the cover Identifying parts on the system board Locating componentsInstalling memory Installing options What to do next Installing adaptersWhat to do next Drive specifications Installing internal drivesInstalling a drive User Guide Connecting the first optical drive Connecting a serial ATA hard disk drive Installing security featuresPassword protection Changing the batteryPadlock loop User Guide Replacing the cover and connecting the cables Erasing a lost or forgotten password clearing CmosUser Guide Starting the Setup Utility program Using the Setup Utility programViewing and changing settings Using passwordsAdministrator password User passwordIDE Drive User Password IDE Drive Master PasswordSetting, changing, and deleting a password Using Security Profile by DeviceSelecting a startup device Exiting from the Setup Utility program Selecting a temporary startup deviceChanging the startup sequence Updating flashing Bios from your operating system Updating flashing Bios from a disketteAppendix A. Updating system programs System programsClick Continue Click Downloads and drivers Recovering from a POST/BIOS update failureAppendix B. Cleaning the mouse Cleaning an optical mouseCleaning a mouse with a ball User Guide Basic AT commands Appendix C. Manual modem commandsSet Pulse dial as default Low speaker volumeSet Tone Dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Trademarks Television output noticeIndex Page Page Part Number 19R0462
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