Main problem with installing DF from CD is issue in DOSBox itself: it cannot recognize label of disc, so if you made "clean" install, it will say "no CD". But as this issue can be avoided with no-cd install, well, I cannot remember anything else. Simply made "full install", apply patch (still with "CD" in DOSBox), made game no-cd, and play! At least, it worked for my my last three installs of it.
