How come I can't play the campaigns in Delta Force 2?

[Mean MrMustard]

I can only play the quick missions.

 

[BreakApart]

Is the CD in the CD tray?

Both Delta force games had limited play enabled after it was installed to the hard drive without a CD in the drive, this was so you could LAN game with multiple computers as long as 1 computer had the real CD in the drive.