C:\WINDOWS\COMMAND\FORMAT A: /U /AUTOTEST
Yes, the computer should be unplugged and deenergized. Please see the NEMA ICS 1.3 standard, "Preventative Maintenance of Industrial Control and
Systems Equipment," which is available for free on NEMA's website (www.nema.org; click on "Find Standards"). You may also want to consult the
NFPA standard 70E, "Electrical Safety Requirements for Employee Workplaces."