Apple has begun rolling out the final build of macOS High Sierra to all Mac owners worldwide after months of beta testing. macOS High Sierra is a refinement software update that adds small improvements and changes to the operating system.
Like any major macOS software update, Apple’s latest version of Mac operating system has its own issues. We have got several complaints from our readers that their Mac won’t start after installing macOS High Sierra or run slowly after macOS High Sierra upgrade.
Fortunately, you can downgrade back to macOS Sierra to avoid bugs and errors and wait until Apple fixes the issues in future updates. Downgrading from macOS High Sierra to macOS Sierra is not complicated, but it may be little bit confusing to some folks.
In this guide, we will walk you through the steps to downgrade from macOS High Sierra back to macOS Sierra. Before we begin, make sure you have already created a full backup of your Mac using Time Machine. If have not, check out our steps below.
How to use Time Machine to back up a Mac
Step one: First off, click on the Apple menu at the top left corner of the screen and then select System Preferences from the pull-down menu
Step two: Locate and select Time Machine from the Preferences window. After that, hit Select Backup Disk and select which disk you wish to use as a Time Machine backup
Step three: Check the box next to Back Up Automatically to complete the task.
How to create a bootable drive of macOS Sierra
To downgrade from macOS High Sierra back to macOS Sierra, you need to create a bootable macOS Sierra installer drive. If you need help, you can follow our steps below.
Step one: Head over to Mac App Store to download the macOS Sierra installer (make sure you downloaded the installer before the final build of macOS High Sierra arrives). After that, you need to download Disk Creator. To do this, open your web browser and go to this link
Step two: Insert a flash drive and open Disk Creator on your Mac. From here, click the “Select the OS X Installer” button and locate the macOS Sierra installer file you downloaded earlier
Step three: Select the flash drive and hit “Create Installer”.
How to erase macOS High Sierra on your Mac
Once you have successfully made a bootable macOS Sierra installer drive, you are safe to erase macOS High Sierra. Here is how.
Step one: Connect your Mac to a Wi-Fi network and hit Apple icon at the top left corner of the screen
Step two: Next up, hit Restart from the drop-down menu. After that, hold down Command + R until your Mac reboots and enters Recovery mode
Step three: From the OS X Utilities window, click on Disk Utility and proceed with clicking on Continue
Step four: You now need to select your startup disk from the list and make sure you select the Erase tab. After that, enter the name for the file you want to remove and select Mac OS Extended (Journaled)
Step five: Hit Erase to confirm your action.
How to re-install macOS Sierra on your Mac
Before we begin, make sure your Mac is still connected to a network (Wi-Fi or Ethernet). If not, connect your machine to a local network to re-install macOS Sierra.
Step one: Click on the Apple menu at the top left and select Restart. After that, hold down the Option key while your machine reboots and then select macOS Sierra from the startup disk menu
Step two: Hit Continue to install macOS Sierra.
Also read: 5 most annoying features in iOS 11
Got any questions? Let us know in the comments below.
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