Epson 386SX - Manual (Page 134)

3. To select an option, use the arrow keys to highlight the
option you want and press Enter. Most options contain
submenus; keep highlighting your selection and pressing
Enter until you select the desired operation.
MENU works by calling external commands which it looks for
on the current disk or path. If you do not have a hard disk and
the diskette in the current drive does not contain a command
called by MENU-for example, BACKUP.COM-you may see
an error message like this when you select an option:
BACKUP.COM is not on the current disk
or path.
Press any key to continue...
If you see a message similar to this one, insert the diskette that
contains the command you selected into drive A and try again.
(To see which commands are on which MS-DOS diskettes,
refer to the list of your Working diskette contents in the
MS-DOS Installation Guide.)
__
Note
If you find that you often have to swap diskettes when you
use MENU, see the description of MENU in your MS-DOS
Reference Manual for some recommended solutions.
4-38 Using MS-DOS with Your Equity 386SX