> > interesting... why do you want to keep using gbak 1.5 with a 2.1
> database?
> > if you have a 2.1 database you need to be running server 2.1 to use
> it, and
> > therefore have ready access to the correct gbak version...
>
> I don't want to work that way. It is because I discover that GBAK 1.5
> can backup Firebird 2.1 database and that make me curious. I worry
> some data might not backup properly if this happen.
>

you could be right - as Vlad says, it will eventually fail.. so leave
curiosity out and value your time more, just move all your tools up in
harmony
Alan