Hello StickYY. That's because /data/dosbox doesn't exist unless you created it. Have you created it? In my case, I put my DOS games and programs in a folder i created in MyDocs since it's the biggest partition. (That's where videos, photos and music are, this is also what appears in your file manager) so, for me the conf file will be: mount c /home/user/MyDocs/dosgames c: