> I noticed that the service created by instsvc starts
> fb server using "fbserver.exe -s". But following Ivan
> Prenosil's link it seems that '-s' flag is obsolete.
> So with or without '-s', if '-a' is not provided, fb
> will start as a service?

You can try it yourself, you will not spend more than a minute.
Yes, the service will start, whether "-s" is used or not.
(so either the switch is ignored, or perhaps it has some hidden
functionality I have not discovered yet).

Ivan