Speaking of DOS and configuration. Everyone used to whine about that. Having to put cryptic lines of text in CONFIG.SYS and AUTOEXEC.BAT to get some game running. But I look back now and I see my old configuration files that I used on my last DOS computer, or the files I use to configure FreeDOS, and it is really not bad at all compared to any modern OS.
In two short text files, maybe typically a few dozen lines in total (and the OS installer is likely to give you good defaults) it sets up all preferences, from command-line keyboard layout to TCP/IP to what settings DJGPP need to compile C++. There is no control panel or other annoying settings GUI to hunt for settings, just two files.