Epson 386SX - Manual (Page 182)

Hard Disk Problems
If you are having problems with the hard disk in your computer,
try the following steps:
1. Be sure you have installed MS-DOS on the hard disk
according to the instructions in the MS-DOS Installation
Guide.
2. If you have installed MS-DOS on the hard disk but it does
not load MS-DOS when you turn on the computer, it may
be missing one of the MS-DOS system files. Turn off your
computer and insert your Startup diskette into drive A.
Then turn on your computer again.
Type
C
: and press Enter to log onto the hard disk. If this
works, the next step is to make sure the file
COMMAND.COM is in the root directory of the hard disk.
Type
DIR
and press Enter.
If COMMAND.COM is in the root directory, use the
MS-DOS COMPARE command to compare the
COMMAND.COM file on your diskette with the
COMMAND.COM file on the hard disk. (See your
MS-DOS Reference Manual for instructions on using
COMPARE.) If the files do not match, use the COPY
command to replace COMMAND.COM on the hard disk
with the COMMAND.COM file on your diskette. Type the
following and press
Enter:
COPY A:COMMAND.COM C:
3. If the hard disk still does not work, the root directory of
your hard disk may be missing some hidden system files.
(Hidden files are not displayed when you list files using the
DIR command.)
A-14 Troubleshooting