Booting Slowly

Issue/Question

My Mac takes a long time to boot.

Environment

• macOS 10.10 (Yosemite) +

Resolution

1. Force turn off the computer by holding the power button for about 10 seconds.
2. Turn the Mac back on.
3. Immediately press and hold these keys simultaneously:
   • Option
   • Command (⌘)
   • P
   • R
4. The Mac will light up the screen, begin booting, then reboot.
5. When the screen lights up again, release the keys.