OnyX is quite a powerful tool so if your not sure on something then read the help file found in the help menu before you do anything.
The main reason I have used OnyX in the past is to make use of the Cleaning facility that it has to offer which is the section I am going to focus on as part of this review.
WARNING: Ensure that you don't have any programs open when you run OnyX. If you do have some programs running it will close them so you may lose your work if you've not saved any open files.
Click Continue and the S.M.A.R.T. status box will appear
Click Continue to verify your startup volume
