Use it only if you want to run maintenance scripts or other things like that. This action is optional and you probably shouldn't use it in the automatic setting, because it prolongs the OnyX startup. Another thing that can be verified at startup is the volume. This feature can be disabled, but you should probably leave it checked. Every time you start it, you need to provide your password and run it under an administrator account.Īt start up, the first thing that the program verifies is the S.M.A.R.T. This tool needs to run under administrative privileges. 'OnyX' is a maintenance tool program that allows you to access and use hidden Mac OS X features.