If you decide to do a clean install on your Mac, back up all your important files in case something goes wrong. So if you want to do a clean install of macOS Sierra, first, then: • Make sure your Mac is online. • Click on the Apple icon (). • Choose Restart from the drop-down menu. • Hold down Command-R when you hear the startup chime — and keep holding ‘em until your Mac reboots. • Click on Disk Utility in the OS X Utilities selector.

• Click Continue. • Select your Startup Disk. • Click on the Erase tab at the top of the window. • When your Mac's startup disk is formatted, return to the Utilities window and choose 'Install macOS.” • Select your startup drive when asked where to install the OS. • Follow the onscreen prompts to complete the installation.

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No.3 Mac cleaner for macOS High Sierra - MacBooster. MacBooster is another wonderful Mac cleaner. It supports to clean up junk files under macOS High Sierra. This Mac cleaner for macOS High Sierra can help Mac users easily and quickly find issues on Mac and fix them. The interface is clean and simple. A clean install of Mac OS will restore your Mac to factory settings and reinstall new Mac OS on the computer, which is right for you if you want to give your Mac/iMac/MacBook a fresh restart. This tutorial will explain to you how to clean install macOS High Sierra step by step.

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The Apple keynote that happened this September released the latest version of the Mac operating system. Upgrading to this latest version equates to heaven for most Mac users.

That is if you have done it in the proper way. But how do you do it right? By actually implementing a clean install of the High Sierra of macOS. You don’t have to be frustrated about doing this. It is actually easy. We have created a comprehensive guide to help you upgrade and make your device perform optimally. First, let’s take a look at the stellar features this new operating system provides.

After that, we will be giving you the comprehensive guide to clean install your macOS High Sierra. Here are various upgrades made on this new operating system: 1 - Safari is very much improved making it smarter and faster. A lot of customization features are given to users. 2 - More protective security is provided for the file system. It comes with crash-safe protection and an encryption feature that is built-in.

3 - Videos take up less storage space, about 40%. They even look better than ever. 4 - New synchronization methods can be used in the Photos application. It even comes with enhanced professional editing tools. 5 - Metal 2 is now improved with its high-quality development tool, robust graphics features, and an external GPU 6 - Siri comes in with a new talent, being a DJ.

Plus, its voice will sound more human than before. To make sure your Mac device performs optimally, it is necessary to implement a clean install of the High Sierra. The reason is actually quite simple.

When you format your Mac device’ hard drive, you are getting rid of all the issues it has gathered over time. Your device will now be a clean slate ready to start anew. When you do a clean install, you will remove unnecessary files and junk applications that results in the slowing down of your Mac. Plus, you will have more disk space in your device. This will result in you being able to have a Mac device that is faster and performs at its best. You will then be able to enjoy macOS 10.13’s amazing features at its peak.

Here’s what you should do to prepare your device for a High Sierra clean install 1. Check Out Compatibility of macOS 10.13 High Sierra Before you clean install macOS High Sierra, you must find out if your Mac can actually run on it. Is it compatible? Are you scared that your Mac won’t be? Well, don’t be.