Open up Terminal (Applications > Utilities) and jot down in:
That will verify your disk.
Next, you might repair by typing in:
Repairing permissions will likely take a while.
How to Verify & Repair Permissions in OS X El Capitan| OS X Daily
Verify and Repair Permissions from the Command Line in OS X El Capitan
The helpfulness of verifying and repairing file permissions in OS X is debatable , and in OS X El Capitan, Apple’s removed the option from Disk Utili
