Since about 2011 I've started using dvorak as my main keyboard layout and like the efficiency compared to QWERTY.
When learning russian I had to type some stuff in russian, as I found out that there was a phonetic keyboard I was excited but it didn't work on dvorak layout. So some guy named Oleg made a phonetic russian keyboard layout in dvorak and you can download it here. When you want to use it you have to append the information from the file to
/usr/share/X11//xkb/symbols/ruWhen you want to load it you can type
setxkbmap -layout ru -variant phonetic_dvorak
To use dvorak in dos download this file containing dvorak.com
Transfer it to your C:\DOS folder for example and add this to your AUTOEXEC.bat:
C:\DOS\DVORAK.COMWhen your computer boots the program will say DVORAK is loaded and you're good to go
Dvorak is also usable in dosbox via a custom mapper file that your can find here
You can enable the layout by saving this in your settings directory and
mapperfile=dvorak-0.74.mapto your sdl section of your dosbox config.