Epson Equity 320SX PLUS - Manual (Page 128)

If you install a hard disk drive that has never received a
hardware level format (such as some non-Epson hard disk
drives), you need to format the disk. Check the manual that
came with your drive, and then, if necessary, follow the
instructions in Appendix B to format your new hard disk.
If you have added a hard disk drive and you want to load
MS-DOS or another operating system from that drive, you
need to install the operating system on it. See your MS-DOS
manuals or the documentation that came with your
operating system for instructions.
If you install an optional memory card, use the setup
program that comes with it to configure the computer for use
with the card. See your memory card manual for instructions.
Additionally, you may need to add some commands to your
configuration files. See your MS-DOS manuals and the
manual that comes with your optional equipment for
instructions.
You may also want to test a newly-installed option. Some
options come with their own diagnostics test programs, and
you can use the diagnostic programs on your Reference
diskette to test the following:
System memory
Serial and parallel ports
Disk drives
Monitors and display adapters.
See Appendix B for instructions.
6-26 Installing and Removing Options