Do you mean DOS or an NT command prompt? AFAIK, most BIOS updates are done in either DOS or GUI Windows. A command prompt only NT is a bit tricky, and not very useful anyway. A DOS booting USB stick ...
Much of the time, opening the Command Prompt as a regular user is all you need. Sometimes, though, you'll need to open the Command Prompt as an administrator so that you can run commands that require ...
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