Epson 386/25 - Manual (Page 267)

Hard Disk Problems
If you are having problems with the hard disk in your computer,
you may see one of the following error messages:
❏ 1760 Disk 0 parameter failure
❏ 1761
Disk 1 parameter failure
❏ 1770 Disk 0 parameter error
❏ 1771
Disk 1 parameter error
❏ 1780 Disk 0 failure
❏ 1781 Disk 1 failure
❏ 1782 Disk controller failure
❏ 1790 Disk 0 error
❏ 1791 Disk 1 error.
Try the following steps:
1. Be sure you have installed MS-DOS on the hard disk as
described in the MS-DOS Installation Guide.
2. Did you enter an incorrect hard disk drive type when you
ran the Setup program? Check the hard disk drive type table
in Chapter 2 for a list of the types available. If you entered
user-defined parameters to configure your hard disk, see the
documentation that came with your hard disk to ensure that
you use the correct parameters.
3. 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.
Troubleshooting D-19