That's... strange: What does it say on the first screen when you launch the game?
It shout say:
"Welcome to DOSBox
... The DOSBox Team http:...
Drive C is mounted as...
Drive D is mounted as...
What do you see?
Exactly as this:
"CD ROM's initialization.
Please install MSCDEX v 2.1 or above. "
with the ubisoft logo on the very top in a blue marquee bar...
But I did tried manually starting MSCDEX by inputing mount d C:\ -t cdrom at the end. Worked... but... at the expense of the lush music... Damn less nostalgic value now :(