The original election software used the psOS+ embedded operating system. We reformatted the memory card to boot DOS instead. (Update: Yes, it can also run Linux.) Challenges included remembering how to write a config.sys file and getting software to run without logical block addressing or a math coprocessor. The entire process took three afternoons.
"The more artificial taboos and restrictions there are in the world, the more the people are impoverished.... The more that laws and regulations are given prominence, the more thieves and robbers there will be." - Lao Tzu, 6th century BC