@ rem  call:   insert 3 a: hugo.zoo
@ if exist %2\%3 goto :done
@cls
:ask
@echo ******************************************************************
@echo        Please insert disk %1 into drive 2% now.
@echo ******************************************************************
@pause
@if exist %2\%3 goto done
@echo ******************************************************************
@echo ***    THIS IS THE WRONG DISK !!!                              ***
@echo ******************************************************************
@echo        The correct disk is expected to contain a file
@echo                        %3
@echo        while this disk offers files
@ dir %2 /w
@goto ask
:done