Ok first of all if you have issues installing FreeDOS on VirtualBox and you get weird infinite loop
Invalid Opcodeerrors, [here] I wrote a small instruction how the installation should be done.
Now when you have FreeDOS booted, from [here] you need to install the networking software and reboot.
then you can run
fdnpkg updateto update the installed packages
but you don't need to install dn as it comes with the FreeDOS iso file. all you need to do is:
DN2and select it
Foad Sojoodi Farimani Foadsf
University of Twente