Advantech PCA-6143P User Manual page 43

Floppy disks
The Flash/ROM disk will replace the corresponding floppy disk.
For example, if you have a single floppy disk (drive A:) and assign
the Flash/ROM disk to be the 1st drive (both switches 5 and 6 are
on), any drive operations directed at drive A: will go to the Flash/
ROM disk. This floppy drive will then be assigned the next free
drive designation. The example below illustrates this.
Hard disks
The Flash/ROM disk will not replace corresponding hard disks.
Instead, DOS will assign the Flash/ROM disk to the next free drive
designation. For example, if you have a single hard disk (drive C:)
and assign the Flash/ROM disk to be the 3rd drive (switch 5 on,
switch 6 off), the Flash/ROM drive will become drive D:. If you
have two hard disks, the Flash/ROM drive will become drive E:.
You install the Flash/ROM disk as drive A: (both switches 5 and 6
are on).
Before installing Flash/ROM disk
A
DOS 5.0+ FDD
After installing Flash/ROM disk
A
DOS 5.0+ Flash/ROM
B C
FDD HDD
B C
FDD HDD
Appendix A Flash/ROM disk 43
D
FDD