Epson 386/25 - Manual (Page 245)

To start this test, select 2-Destructive surface
analysis from the Hard Disk Format Menu. You see these
messages:
Analyze Hard Disk
Read/Save/Write/Read/Restore/Read
check for all tracks...
Current cylinder
is nnnn
As the program checks each track, it counts the cylinder
numbers (nnnn) down to zero. When the test is complete, the
program displays a report on the status of the disk, including a
table of unflagged tracks that produced write, read errors-such
as the following:
Analysis finished.
No write, read error was detected.
No data was destroyed.
Press ENTER to return to the menu.
If the program finds one bad track that is not flagged, the
summary would show one track with a write, read error. The
report is followed by a table like this:
Write, Read Error Tracks
Cylinder Head Cylinder Head Cylinder Head Cylinder Head
237 2
Confirm to register the tracks in the Write, Read Error Track
Table as bad tracks.
Do you want to register the error tracks as bad tracks? (Y/N)
Physically Formatting a Hard
Disk C-11