Intel Desktop Board D845EPI Technical Product Specification

5.The operating system loads. While the operating system is loading, USB keyboards and mice are recognized and may be used to configure the operating system. (Keyboards and mice are not recognized during this period if Legacy USB support was set to Disabled in the BIOS Setup program.)

6.After the operating system loads the USB drivers, all legacy and non-legacy USB devices are recognized by the operating system, and Legacy USB support from the BIOS is no longer used.

To install an operating system that supports USB, verify that Legacy USB support in the BIOS Setup program is set to Enabled and follow the operating system’s installation instructions.

NOTE

Legacy USB support is for keyboards, mice, and hubs only. Other USB devices are not supported in legacy mode.

3.6 BIOS Updates

The BIOS can be updated using either of the following utilities, which are available on the Intel World Wide Web site:

•Intel® Express BIOS Update utility, which enables automated updating while in the Windows environment. Using this utility, the BIOS can be updated from a file on a hard disk, a 1.44 MB diskette, or a CD-ROM, or from the file location on the Web.

•Intel® Flash Memory Update Utility, which requires creation of a boot diskette and manual rebooting of the system. Using this utility, the BIOS can be updated from a file on a 1.44 MB diskette (from a legacy diskette drive or an LS-120 diskette drive) or a CD-ROM.

Both utilities support the following BIOS maintenance functions:

•Verifying that the updated BIOS matches the target system to prevent accidentally installing an incompatible BIOS.

•Updating both the BIOS boot block and the main BIOS. This process is fault tolerant to prevent boot block corruption.

•Updating the BIOS boot block separately.

•Changing the language section of the BIOS.

•Updating replaceable BIOS modules, such as the video BIOS module.

•Inserting a custom splash screen.

NOTE

Review the instructions distributed with the upgrade utility before attempting a BIOS update.

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