IBM Partner Pavilion 6793, 6343, 6349, 6791 Appendix B. Updating System Programs, System programs

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Appendix B. Updating System Programs

The following contains information about updating system programs (POST/BIOS) 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 IBM 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 IBM 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 IBM Setup Utility program by starting your computer using a flash update diskette.

IBM 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 README file that is included in the update files.

To update system programs (flash the EEPROM):

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.pc.ibm.com/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.

Recovering from a POST/BIOS update failure

If power to your computer is interrupted while POST/BIOS is being updated (flash update), your computer might not restart correctly. If this happens, perform the following procedure to recover:

1.Turn off the computer and any attached devices, such as printers, monitors, and external drives.

2.Unplug all power cords from electrical outlets, and remove the cover. See “Removing the cover” on page 17 (small desktop model), “Removing the cover” on page 29 (desktop model), or “Removing the cover” on page 41 (microtower model).

3.Locate the Clear CMOS/Recovery jumper on the system board. See

“Identifying parts on the system board” on page 18 (small desktop model), “Identifying parts on the system board” on page 30 (desktop model), or “Identifying parts on the system board” on page 43 (microtower model).

4.If necessary, refer to Installing adapters to remove any adapters that impede access to the Clear CMOS/Recovery jumper.

5.Move the jumper from the standard position (pins 1 and 2) to pins 2 and 3.

© Copyright IBM Corp. 2001

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Contents Page Page Page Page Contents Index To connect To disconnect Safety InformationModem safety information Lithium battery noticeConsignes de sécurité relatives au modem Laser compliance statementViii User Guide How this book is organized About this bookInformation resources Identifying your computer OverviewUser Guide Microprocessor FeaturesExpansion Physical specifications small desktop model SpecificationsPhysical specifications desktop model Physical specifications microtower model Tools required Available optionsHandling static-sensitive devices Overview User Guide Locating the connectors on the front of your computer Installing external optionsUSB connector Locating the connectors on the rear of your computer User Guide Installing external options Obtaining device drivers Connector DescriptionRemoving the cover Installing internal options small desktop modelIdentifying parts on the system board Locating componentsInstalling DIMMs Installing memoryWhat to do next Installing adaptersInstalling internal options small desktop model What to do next Drive specifications Installing internal drivesInstalling a drive Installing a Rope Clip Replacing the cover and connecting the cables Installing internal options small desktop model User Guide Installing internal options desktop model Locating components Installing internal options desktop model Installing adapters Installing internal drives Drive specifications Installing a drive To connect the first IDE CD drive or DVD drive To connect an additional IDE CD drive or DVD drive Replacing the cover and connecting the cables Installing internal options desktop model User Guide Installing internal options microtower model Moving the power supply Installing internal options microtower model Installing memory Installing adapters User Guide Installing internal drives Installing a drive Installing internal options microtower model To connect the first IDE CD drive or DVD drive Installing a Rope Clip Replacing the cover and connecting the cables Installing internal options microtower model User Guide Using the IBM Setup Utility program Setting, changing, and deleting a password Administrator passwordErasing a lost or forgotten password clearing Cmos Other settings in the IBM Setup Utility program Using Security Profile by DeviceStartup sequence Changing the startup sequenceUser Guide Appendix A. Changing the battery User Guide Appendix B. Updating System Programs Recovering from a POST/BIOS update failureSystem programs User Guide System memory map Appendix C. System address mapsAddress map LPT3 COM1 DMA I/O address mapAddress hex Description Bits Byte pointer Following tables list the IRQ and DMA channel assignments User Guide Television output notice Appendix E. Notices and trademarksIBM TrademarksDMA IRQ IndexLocation 19, 31 Memory Page Part Number 25P4024
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