Head Select Check; Error Detection And Correction Check - Epson Apex 20020, 20040 User Manual

2. Re-format the disk using option 2, Format hard disk, on the
OPERATION MENU. See Appendix D for instructions.
Prepare the hard disk for use with FDISK and SELECT. See
3.
Appendix E for instructions.

Head Select Check

This test checks whether each head of the hard disk can be
selected correctly. If both heads are checked without error, the
program returns to the main menu. Select option 3 from the
menu to start this test.

Error Detection and Correction Check

This test checks the ability of the hard disk drive to detect a
read/write error and to correct the data accordingly.
Select option 3 from the menu to start this test. You see these
messages:
The data on the highest physical cylinder
may
be
Enter Y to start this check.
Enter N to return to the menu.
Press and then
Y
occur, the program returns to the menu.
An error occurs only if the drive is malfunctioning. In this case,
back up all your files, and have the drive serviced immediately.
(The drive may be corrupting your data.)
destroyed by this check.
continue with the test. If no errors
Enter to