Epson Apex 20020 - Manual (Page 211)

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 then 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)?
To flag the error tracks as bad, press Y and Enter. You then see
a list of the tracks as they are flagged and then these messages:
Flagging
bad tracks...
Cylinder is 237, head is 2
Press ENTER to return to the menu.
Press Enter to return to the HARD DISK FORMAT MENU.
Non-destructive Surface Analysis
The Non-destructive surface analysis does not destroy any data,
and can safely be used to check the condition of your hard disk
drive. However, this test does not flag any bad tracks it detects.
To start the test, press 4 and then Enter. You see these
messages:
Analyze Hard Disk
Read/Verify check for all tracks...
Current cylinder is xxxx
As each track is checked, the current cylinder is displayed. The
cylinder number counts down to zero as the disk is checked.
Physically Formatting a Hard Disk D-11