Epson 486SX - Manual (Page 102)

Post-installation Setup
Any time you install or remove a math coprocessor or memory
modules, you must run the Setup program on your Reference
diskette so it can automatically update the computer’s
configuration information. You must also run Setup if you
install or remove any other type of option, such as an option
card or a disk drive. For example, if you add a hard disk drive,
you need to let the computer know the type of drive you have
installed. Follow the instructions in Chapter 2 to run Setup.
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 it before use. Check the manual that
came with your drive to see if it is already formatted, and then,
if necessary, follow the instructions in Appendix A to format
the 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 the documentation that
came with your operating system for instructions.
If you install a memory option card, use the setup program that
came with it to configure the computer for use with the card.
See your memory card manual for instructions.
If you want to use any of your extended memory as
Additionally, you may need to add some commands to your
configuration files. See your operating system manual and the
manual that comes with your optional equipment for
instructions.
5-12 Accessing Internal Components