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I know that the following should work:
Environment.GetEnvironmentVariable("windir", EnvironmentVariableTarget.Machine)
My problem with this call is that if for some reason someone decided to remove the "windir" Env Var , this won't work.
Is there an even more secure way to get the System drive?
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string windir = Environment.SystemDirectory; // C:\windows\system32
string windrive = Path.GetPathRoot(Environment.SystemDirectory); // C:\
Note: This property internally uses the GetSystemDirectory() Win32 API. It doesn't rely on environment variables.
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