I Have Problem To Load A Game In Chankast

As I Said I Have Problem To Play A Game In This Emulator
I Wil Explain My Problem :
I Loaded A Image File Game (ׂmarvel Vs Capcom 2 For Dreamcast Of Coruse)
Into The Virtul Drive Of Course I Copied The Bios And Changed
The Game Cable Type And Chose The Virtual Drive With The Image In The Drive Option But ............... When I Push The Start Button
The Problem Begins ..... The Game Dosent Run .....
It Bring Me To The Dreamcast Menu And It Thinks Thier Is No Disc
In The Drive Even In The Dreamcast Menu When I Push The Play
Game Button He Says "enter Game Disc" Like It Dont Know Thier Is Image In The Drive Who Do I Fix This Problem (i Have Tried To Dowload Another Chankast From Another Place The Same Thing .....
And I Try To Install Deamon Tolls And Alcohol ...... The Same Thing
Even I Try To Burn The Image On A Disc And It Dosen Worked)

Please .......... Sombody Help Me ...................

yes i did select the correct drive...............
and even then it says their is no disc.....
something else have the problem not in the configurtion on the emulator
and i dont no what is the problem ...........