Advantech PCA-6153 Manual page 43

Virus Warning
During and after the system boots up, any attempt to write to the
boot sector or partition table of the hard disk drive will halt the
system. In this case, a warning message will be displayed. You
can run an anti-virus program to locate the problem.
If Virus Warning is Disabled, no warning message will appear if
anything attempts to access the boot sector or hard disk partition.
CPU Internal Cache/External Cache
Depending on the CPU/chipset design, these options can speed up
memory access when enabled.
Quick Power On Self Test
This option speeds up the Power-On Self Test (POST) conducted
as soon as the computer is turned on. When enabled, BIOS
shortens or skips some of the items during the test. When disabled,
normal POST procedures are followed.
Boot Sequence
This function determines the sequence in which the computer will
search the drives for the disk operating system (i.e. DOS).
A,C System will first search the FDD, then the HDD.
C,A System will first search the HDD, then the FDD.
C, CDROM, A System will search the HDD, CDROM, then the FDD.
CDROM, C, A System will search the CDROM, HDD, then the FDD.
C only System will only search the HDD.
Boot Up Floppy Seek
During POST, BIOS will determine if the floppy disk drive
installed is 40 or 80 tracks. 360 KB type is 40 tracks while 720
KB, 1.2 MB, and 1.44 MB are all 80 tracks.
Enabled BIOS searches the floppy drive to determine if it is 40 or 80
tracks. Note that BIOS cannot differentiate 720 KB, 1.2 MB, and
1.44 MB type drives as they are all 80 tracks.
Disabled BIOS will not search for the floppy drive type by track number.
Note that there will not be any warning message if the drive
installed is 360 KB.
Chapter 3 Award BIOS Setup 35