Lenovo d20 4158 Manual Do Equipamento
Updating (flashing) BIOS from a diskette or CD-ROM
This section describes how to update (flash) the BIOS using a diskette or CD-ROM.
System program updates are available at http://www.lenovo.com/support on the
World Wide Web.
1.
System program updates are available at http://www.lenovo.com/support on the
World Wide Web.
1.
To update (flash) the BIOS:
v
From a diskette, make sure the computer is turned off and insert a system
program update (flash diskette). Then turn the computer on. The update
begins.
program update (flash diskette). Then turn the computer on. The update
begins.
v
From a CD-ROM, make sure the computer is turned on. Insert the CD-ROM
into the optical drive.
into the optical drive.
2.
Turn on the computer. If it is on already, you must turn it off and back on
again. The update begins.
again. The update begins.
3.
When you are prompted to select a language, press the number on your
keyboard that corresponds to the language and then press Enter.
keyboard that corresponds to the language and then press Enter.
4.
When prompted to change the serial number, press Y.
5.
Type in the seven character serial number of your computer and then press
Enter.
Enter.
6.
When prompted to change the machine type/model, press Y.
7.
Type in the seven character machine type/model of your computer and then
press Enter.
press Enter.
8.
Follow the instructions on the screen to complete the update.
Updating (flashing) BIOS from the operating system
Note:
Due to the constant improvements made to the Web site, Web page content
(including the links referenced in the following procedure) is subject to
change.
(including the links referenced in the following procedure) is subject to
change.
1.
From your browser, type http://www.lenovo.com/support in the address field
and press Enter.
and press Enter.
2.
Locate the Downloadable files for your machine type as follows:
a.
a.
Type your machine type and click Go.
b.
Click Continue.
c.
Click Downloads and drivers.
d.
Under the BIOS category, click the Flash BIOS update.
e.
Click the .txt file that contains the installation instructions for the flash BIOS
update (flash from the operating system version).
update (flash from the operating system version).
3.
Print these instructions. This is very important since they are not on the screen
after the download begins.
after the download begins.
4.
From your browser, click Back to return to the list of files. Carefully follow the
printed instructions to download, extract, and install the update.
printed instructions to download, extract, and install the update.
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 commonly called Boot-block Recovery.
update), your computer might not restart correctly. If this happens, perform the
following procedure commonly called Boot-block Recovery.
1.
Turn off the computer and any attached devices, such as printers, monitors,
and external drives.
and external drives.
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Hardware Maintenance Manual