You may find many foreign packages (Debian/Ubuntu) that work,
will not. This is because of incompatible libraries. You may be
more successful if your foreign packages are released close
close to the build date of Fatdog64 version you use. For example
Fatdog 500 series (500, 510,
520/521) build date is 2009, so for Debian this would be Etch or
Lenny. For Fatdog64 600 series released in 2012, you
may be able to use Debian Squeeze. For Fatdog64 700 series, use
But even then this may not work, because of missing software libraries or how libraries are compiled differently in Fatdog. You can try to extend your luck by installing the missing libraries as well from your foreign package source, but this is pushing it.
If you still cannot get it work, either use similar package from Fatdog64 repository, or you'll probably need to compile that package from source.