> Ok ... i know, this is an often seen subject ...
>
> I have an old (year 2002) Interbase database that i want to use with
> Delphi 2007/2009. Actual connection is impossible since it tells me
> that it is "unsupported on-disk structure".
>
> What could i do to restore that database? I do backup and restore the
> database using recent version of IBExpert but it doesnt help me with
> the Delphi 2007 connection.
>
> Do i have to go back to older Interbase GBAK (Interbase 5?) to backup
> the database and then restore it with some recent Interbase ?
>
> Thanks.

well just to be clear. This is the Firebird suport group not Interbase. But
many things are the same...
If you intend to continue working in the Interbase environment, then, yes, I
would suggest you back it up using the Interbase version and matched gbak
which the database expects. Then restore it to the Interbase version you
wish to now use.
If you want to use Firebird, then the same applies but of course you will
need to restore it to Firebird and you may need to check the metadata for
differences between versions.
That said - "unsupported disk strucure" is usually associated with trying to
run a newer database structure on an older server... could this be correct?
Alan