[robespierre]

You may have to use one of the different formats because the way defects are tracked depends on the drive.

Code:

fx> /bad/showbb -g -c

Is probably what you need, but there is also

Code:

fx> /bad/showbb -g -b

The default when no format is given is -l which means logical block number format. You can read most of the fx documentation from inside the program: just type "help" or "?" followed by the command name and it will print all of its options.