MP440BX Motherboard Technical Product Specification
3.11 Boot Options
In the Setup program, the user can choose to boot from a diskette drive, hard drive, CD-ROM, or
the network. The default setting is for the diskette drive to be the primary boot device and the hard
drive to be the secondary boot device. By default the third and fourth devices are disabled.
Booting from CD-ROM is supported in compliance to the El Torito bootable CD-ROM format
specification. See Section 6.2 for information about the El Torito specification. Under the Boot
menu in the Setup program, CD-ROM is listed as a boot device. Boot devices are defined in
priority order. If the CD-ROM is selected as the boot device, it must be the first device.
The network can be selected as a boot device. This selection allows booting from a network add-in
card with a remote boot ROM installed.
3.12 OEM Logo or Scan Area
A 4 KB flash-memory user area is available for displaying a custom OEM logo during POST. A
utility is available from Intel to assist with installing a logo into the flash memory. Contact Intel
customer support for further information. See Section 6.1 for information on contacting Intel
customer support.
3.13 USB Legacy Support
USB legacy support enables USB keyboards and mice to be used even when no operating system
USB drivers are in place. By default, USB legacy support is disabled. USB legacy support is only
intended to be used in accessing BIOS Setup and installing an operating system that supports USB.
This sequence describes how USB legacy support operates in the default (disabled) mode.
1. When you power up the computer, USB legacy support is disabled.
2. POST begins.
3. USB legacy support is temporarily enabled by the BIOS. This allows you to use a USB
keyboard to enter the Setup program or the maintenance mode.
4. POST completes and disables USB legacy support (unless it was set to Enabled while in
Setup).
5. The operating system loads. While the operating system is loading, USB keyboards and mice
are not detected. After the operating system loads the USB drivers, the USB devices are
detected.
To install an operating system that supports USB, enable USB Legacy support in BIOS Setup and
follow the operating system?s installation instructions. After the operating system is installed and
the USB drivers configured, USB legacy support is no longer used. USB Legacy Support can be
left enabled in BIOS Setup if needed.
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