This might sound complicated, but it’s actually not that hard. In short,
it means checking if your Mac goes to the right places to get info.
It’s an alternative to the old “turn it off and on again” method. But it involves using
Terminal (if you’re on El Capitan) and if you’re not familiar with it, we recommend simply
“downloading CleanMyMac 3”
a Mac maintenance app that has a bunch of optimizing tools, including
one-click disk permission repair. If Terminal doesn’t scare you much, you can open it and run commands.
To open Terminal, either use Spotlight Search and type it in, or find it in the Apps/Utilities folder.
Now, in the Terminal window, type in this:
sudo /usr/libexec/repair_packages --verify --standard-pkgs /
This will verify permissions. If you see anything (or a lot of things) starting with “Permissions differ”, type in this:
sudo /usr/libexec/repair_packages --repair --standard-pkgs --volume /
“This helps on most Macs, so repairing permissions is a solid try in speeding your Mac.”