NEC Express5800 User Manual page 111

You can also use "Configuration disk" at "Express Setup" in order to save or backup parameters for
installation.
The Configuration disk is able to have some parameters files that include the configuration
information for the server setup.
If you want to set up the server as before, execute the Express Setup with the parameters file you
have saved that time.
NOTES:
The parameters file is not mandatory to set up the system.
If you want to create a parameters file, have a blank floppy disk
(MS-DOS 1.44MB format) ready.
If you want to use the drivers located on the "OEM-Disk for Mass
Storage Device" that ships with optional boards, a parameters file
is mandatory.
You can create a parameters file in advance using "Configuration
Diskette Creator" included in NEC EXPRESSBUILDER.
Installing the Operating System with Express Setup 5-3