How to Fix macOS High Sierra Slow Bootup?

Imagine a situation: you have installed the fresh macOS High Sierra 10.13 on your MacBook Pro or another Apple computer. You have discovered that the startup takes nine times (!) more time just to get disappointed in the recent operating system. Your previous macOS Sierra 10.12.6 did not show this pitfall, so how comes macOS High Sierra is considered better? How should it work faster?

You may enable FileVault on that device just to find out it takes roughly a minute for it to boot. As for Sierra, it starts up in maximum 20 seconds including what FileVault has to do to get ready the files for viewing.

While some users believe the problem is caused by the APFS replacement of HFS+ while others think it may be the issue with NVRAM. What is the real cause of the slow boot in macOS High Sierra 10.13?

Both those who say it is NVRAM and those who support the idea of APFS are correct in their own way. It depends on a case. Back up the data and get ready to solve the problem with the slow boot!

How to Speed up Mac’s Boot

  1. Turn off the machine. Wait for thirty seconds before restarting
  2. Reset the computer’s PRAM and/or
  3. Reset the System Management Controller (SMC).
  4. Switch on your Mac using Safe Mode and reboot normally after that.
  5. Repair the disk by booting from the Recovery HD. Once you hear the chime sound, start holding down the Cmd + R keys. You need to wait until the Utility menu shows up.
  6. Select Disk Utility and push the Continue button. Choose the indented volume entry from the side list. Push the First Aid button. You need to see the Done button. Escape from Disk Utility and come back to the Utility Menu. Reboot your Mac.
  7. Come up with another user account. Launch Users & Groups preferences.
  8. Push the lock icon and type the administrator’s passcode. Under Current User, pick the plus button. Install a new Admin user account. Once the process is over, sign out of the user account and re-login with a new one.
  9. Download and set up one of the Mac OS X versions update starting from El Capitan 10.11.6 or an update for macOS High Sierra 10.13.2.
  10. Reinstall the operating system from the Recovery HD with the help of Cmd and R keys. Once the Utility menu shows up, pick Reinstall OS X, and push the Continue button.
  11. Delete and install the OS. Reboot the computer. Once you hear the chiming sound, how down the Cmd + R keys to see the Apple logo in the end. After the appearance of the Utility menu:
  • Choose Disk Utility and press Continue.
  • After Disk Utility loads, choose the drive (out-dented entry) form the Device list.
  • Push the Erase button to see a drop-down menu.
  • Switch the Format type to Mac OS Extended (Journaled).
  • Push the Apply button and wait to see the Done feature. Click on it.
  • Shut down Disk Utility and come back to the Utility Menu.
  • Pick Reinstall OS X and push the Continue button.

12. Apply third-party software you can trust. Check whether a particular app has positive feedback. Try a free demo version first to find out whether the application suits your needs. In most cases, the cleaners are completely safe, but still get them from the App Store or official developer’s website to avoid fakes or adware.

13. Have you activated iCloud Disk where you save docs and data? Then, switch it off and log out of iCloud. It may be the cause of the slowdown as well!

14. Get more RAM (memory) or reduce the number of running apps. Get rid of the useless anti-malware tools.

15. Universal solution: Back up the information. Wipe Mac’s hard drive entirely. Reinstall the operating system and restore the data from the backup.