Installing rfd1 for second floppy under sysV 3.2

[Jeff Miller]

I am attempting to access drive b through a program that can read
DOS disks under UNIX. I am using AT&T System V 3.2 UNIX on a 386.
The driver I am attempting to use is /dev/rdsk/f13ht for the 3.5"
1.44mg floppy drive. The program works fine for the first floppy
drive which is a 1.2 mg 5.25" drive. When I attempt to run the program
for the second drive I get the following error:

               no such device or address

I cannot find any information in the manuals that explain how to 
install a second floppy drive.

Thanks for any help!
Jeff Miller.