вот здесь ftp://download.intel.com/support/motherboards/desktop/rc440bx/71383201.pdf на 78 странице написано: а на 74

The Setup program is for viewing and changing the BIOS settings for a computer. Setup is
accessed by pressing the key after the Power-On Self Test (POST) memory test begins and

before the operating system boot begins.

In the Setup program, the user can choose to boot from a diskette drive, hard drives, 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.