Asus AP2400R-E1 - Manual (Page 102)

5-28 Chapter 5: BIOS setup
5.6 Boot Menu
The motherboard BIOS supports the BIOS Boot Specification (BBS)
version 1.01. BBS is an intelligent mechanism that provides flexible ways
to set boot sequence for Initial Program Load (IPL) devices such as
CD-ROMs, network remote boot ROM, and SCSI or RAID controllers on
PnP cards.
The IPL devices are classified into three categories:
1. BIOS Aware IPL Devices (BAID)
2. PnP devices, includes Boot Connection Vector (BCV) and Bootstrap
Entry Vector (BEV) devices
3. Legacy devices
1st Boot : (BAID) [<0> Floppy]
This field allows you to select a BIOS Aware IPL Devices (BAID) to boot
from. A BAID is any device that can boot on an operating system but
requires a specific BIOS code for support. Bootable FDDs, ATA HDD,
ATAPI CD-ROM, ATA ZIP, and ATA MO drives are classified as BAID. The
drives present in the system will appear as options for this field.