> gbak: ERROR: size specification either missing or incorrect for file
> C:\owl\owl\cs_data\data\Test\ko.gdb

> gbak -c -z -v -user SYSDBA -password masterkey -y
> C:\owl\owl\cs_data\data\Test\restore.txt
>
> C:\owl\owl\cs_data\data\Test\kobackup.bk1
>
> C:\owl\owl\cs_data\data\Test\kobackup.bk2
>
> C:\owl\owl\cs_data\data\Test\kobackup.bk3
>
> C:\owl\owl\cs_data\data\Test\ko.gdb 1M
>
> C:\owl\owl\cs_data\data\Test\ko.gd2 1M
>
> C:\owl\owl\cs_data\data\Test\ko.gd3 1M
>
> C:\owl\owl\cs_data\data\Test\ko.gd4

The size of db files must be specified in number of pages.
The shortcut 1M can be used only to specify number of bytes
when doing backup, not restore.

Ivan
http://www.volny.cz/iprenosil/interbase/