I would mount "C:\" as the root folder of all your DOS games - so that, upon entering
dir the commandline, you see the folder "DAGGER" as well as the folders of any other games. Installing games' subfolders within the root directory is what most games did back then, and some may not work properly if this path isn't expressly followed.
You may also be interested in adding the mount command under the [autoexec] header in your DOSBox configuration file, so that you don't have to type out the directories every time you run it. In my case:
[autoexec]# Lines in this section will be run at startup.mount C C:\DOSBox-0.73\games\ -freesize 800C: