Aug 20, 2018 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. 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. You get this feature as one of CleanMyMac’s value-added services, while Dr. Cleaner merges this function into the iTunes cache-cleaning function, because this function is too simple to separate out for display. Mail Attachments. When using the Mail app on the Mac, you can accumulate a lot of attachments over time. Sierra Cache Cleaner is an award winning general purpose tool for macOS X. SCC makes system maintenance simple with an easy point and click interface to many macOS X functions. Before assembling any of the needed components for a clean install, you should verify that your Mac is able to run macOS Sierra. Once you've determined that your Mac is capable of making use of the new OS, you should gather the following: macOS Sierra Installer, available from the Mac App Store. A 16 GB USB flash drive. How to Clean Install MacOS High Sierra. Some Mac users like to perform a clean install when a new operating system is released. Usually this is reserved for more advanced users, as a clean install means the hard drive is formatted and completely erased, removing the existing Mac operating system, and erasing all contents, data, files.
Downloading and installing a new OS gives you the opportunity to do some major house cleaning if you so desire. If you feel like you'd like a fresh start with macOS Catalina, you can always opt to do a clean install: Just follow the steps below, even if you've already installed macOS California.
Make sure you understand the difference between a clean install and a standard install before you get started.
Note: If you are reading this article on the Mac you want to perform the clean install with, switch to another device or print this page before continuing so you can read along as you go.
Step 1: Back up your Mac
This process will erase whichever OS you're currently using from your hard drive entirely. That means any files, programs, or documents you have will be deleted. To save your files, put them on an external hard drive or a cloud-based program like Dropbox, OneDrive, or iCloud. If you don't save these important files off your computer, you will lose them.
Step 2: Create a bootable drive of macOS Catalina
Before you erase your current operating system, download macOS Catalina from the Mac App Store. You'll need a copy of macOS Catalina to perform a clean install later on. If you don't create a bootable drive for macOS Catalina, you may have to install an older Mac operating system first and then upgrade to macOS Catalina afterward.
Step 3: Erase your hard drive
- Connect your Mac to the internet via Wi-Fi or Ethernet
- Click on the Apple icon.
- Select Restart from the drop-down menu.
- Hold down Command-R when you hear the startup chime (or the screen turns black on newer Macs) and keep holding the keys until your computer 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.
- Enter a name for the file to be destroyed (Like macOS Mojave or something).
- If your Mac is using HFS+, select Mac OS Extended (Journaled) from the format list. If your Mac is using APFS, select APFS from the format list.
- If Scheme is available, select GUID Partition Map.
- Click Erase. Best mac cleaner 2019.
Step 4: Reinstall a new copy of macOS Catalina
- Click on Reinstall a new copy of macOS.
- Click Continue.
- Click Continue again when the installer window appears.
- Agree to the software terms and conditions.
- Select your hard drive.
- Click Install.
- Complete the installation process.
Questions?
Any questions about performing a clean install? Let us know below in the comments.
Updated September 2019: Updated for macOS Catalina's public release.
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The cache is a type of memory where data is stored so as to make it easily available when it is needed by the macOS High Sierra. It stores technical data when a browser, app, or system operations are carried out. Over some time cache files can occupy space on hard drive. That`s why it is very important to clear Mac cache regularly in order to preserve its high speed. Caches can include temp files, apps specific caches, partly completed downloads, messaging cache, and web browser history and cache. Apple service diagnostic dmg external hdd. So, let`s find out how to clean Mac cache via different ways.
Clean up your Mac manually
Go to cache and delete the contents – that is what the cache cleaning on Mac is about. Open Finder, select “Go”, click “Go to folder”, type “Library/Caches/”, remove certain cache files, and empty trash.
Sierra Mac Cleaner Free
Fix a lot of browser related errors by Mac safari cache cleaning
All Safari users should remember that too much cache piling up in the background can cause a lot of problems. Clear cache in Safari is pretty easy:
- Launch Safari on your computer
- Click on the “Safari” in the menu bar
- Click on “Preferences”
- Click on the “Advanced”
- Click on the “Show Develop menu in menu bar”
- Click on “Develop”
- Click on “Empty Caches”
Clear Chrome cache by taking several steps
It is very helpful to know how to clear out all Chrome data because there are many cases when users might want to delete all cookies, browser history, web data, and download history for privacy or troubleshooting purposes. This is the simplest way to do it:
- Open Chrome
- Go to the “Chrome” menu
- Choose “Clear Browsing Data”
- Choose caches and web data you are going to remove
- Choose the time period to delete from
- Choose “Clear browsing data”
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Use MacFly Pro to clear cache on your Mac
MacFly Pro is an effective app for decluttering your Mac`s system. It can help you clean up and speed up your computer safely. Here is how it works:
- Install the program
- Open MacFly Pro
- Head to the Cleanup tab
- Start a System scan
- Press Review Files
- Press Clean to remove temporary files, log, User and System cache
With the use of MacFly Pro, you can tackle the problem in no time. You will have a wonderful opportunity to get maximum out of your computer performance seamlessly and quickly. What is more, this cleaning program offers everything you will be satisfied with – intuitive design, simple navigation, reliability, and effectiveness.
Mac Sierra Update
Now you know how to clean cache on your system and improve its maintenance. All you have to do is to transfer your knowledge into practice.