No 4. No need for file-shredders

You can be at peace knowing that know one can recover your private files once you delete them from the MAC and to delete your files securely you don’t need a third party software either, the MAC does it for you itself.

No 3. No hard disk defragmentation

OS Xs later than 10.2 come with preventive measures that don’t allow files to be fragmented in the first place. In other words, MAC does all the “defragmentation” itself.