How to run verify/repair disk permissions on a Mac
Click the spotlight icon in top bar of your Mac (the little magnifying glass), type "Disk Utility," and hit "enter." Select your disk partition from the menu in the left-hand bar, and then click "Verify Disk Permissions," "Repair Disk Permissions," "Verify Disk," and "Repair Disk," in that order. Each one will take a little while to run, so let each test finish before moving on. "Repair Disk" may not be necessary, depending on how the "Verify Disk" goes.
Customer service software powered by Desk.com