Epson 10020 - Manual (Page 204)

Some of the messages change if the table is full or empty.
However, the way that you add a bad track or make a
correction is the same.
To add a bad track, follow these steps:
1. Press A. You see this prompt:
Enter cylinder number (1 - xxxx):
2. Type the number of the cylinder containing the bad track
you want to enter, and press Enter. You see this prompt:
Enter head number (0 - yy):
3. Type the head number for the bad track, and press Enter.
The maximum valid cylinder and head numbers (xxxx and
yy) vary according to the capacity of the hard disk.
To cancel the operation, press Enter without entering a value.
You see this message:
Table unchanged.
If you enter an invalid cylinder or head number, a reminder of
the range of values appears and the program asks you to enter
the value again. When you complete a valid entry, it appears in
the table and you can select another command.
If you make a mistake, move the cursor block to the incorrect
track and press C to alter the track data. Or you can press D to
remove the track from the table. Change the track data just
like you add a track.
Once you complete editing, check the entries in the table once
more. When you are sure the table is correct, press F. The
program displays a warning about the consequences of
proceeding with formatting, and the remaining steps are
exactly the same as for a normal conditional format.
Physically Formatting a Hard Disk E-9