Download and update the macOS is much more simple than before ! Nevertheless, we recommend a few steps before you start. Don’t worry, it’s faster than it seems.
Since 24 September 2018, the latest version of macOS : the Mojave is available as a download, but the next to be called Catalina arrives very soon. Its public beta version is available since June 2019. In this tutorial, we will explain how to get to Catalina on your Mac but also Mojave.
Install macOS Catalina.
Catalina, the less its final version, is not yet available, it will probably be at the end of September 2019, we believe that this will be the 23rd of September. However, if you are rather impatient so be aware that you can download the public beta version of Catalina.
To do this, you must register with the dedicated program, the form is accessible from this page. Once registered, we advise you to make a backup of your macOS before you download Catalina beta. If not, install it on a partition or on an external hard drive.
1. Find the right version of macOS .
First of all, identify the version of the operating system macOS that you want to install.
At the time of the writing of this article, macOS Mojave is the most recent version of the operating system of Apple.
2. Make sure your Mac is compatible .
To install macOS Mojave or Catalina, you must have one of the following devices :
MacBook early 2015 or later.
MacBook Air mid-2012 or later.
MacBook Pro mid-2012 or later.
Mac mini late 2012 or later.
Mac Pro late 2013, for Catalina and Mojave at the end of 2013, in mid-2010 and mid-2012.
iMac late 2012 or later.
iMac Pro all
3. Make sure you have enough memory .
Apple recommends that you have at least 20 Gb of free space before you install a new os, although it should not occupy much space, however, this amount of space will be needed for temporary files and other.
If you’re short of storage space, lighten your computer by storing your files on a Cloud, for example.
4. Back up your hard disk .
It is necessary to back up your hard disk before you perform a major update, especially if you install a beta version.
Fortunately, Apple makes this very easy with Time Machine.
5. Verify that your Mac works correctly .
Before you install a new macOS but after you have made the backup of the hard drive, it is recommended to check that your Mac is running most efficiently.
To do this, go to Applications → Utilities → disk Utility. Select your hard drive in the left column, then click on the S. O. S (in the top of the window) and confirm with Run.
If the utility of the disc detects a problem you will need to restart your computer in recovery mode :
Turn off your computer.
Press Command and R (and hold both) by restarting your computer.
Your Mac is in recovery mode, which gives you access to disk utilities.
Click on disk Utility then click Verify disk. If errors are detected, a message will appear asking you if you would like to restore it.
You can also use Apple Hardware Test or Apple Diagnostics to check the operation of your computer.
6. Sign in to iCloud .
Many applications and services are related to iCloud. Make sure you are logged in to your account online to be sure that the update goes off without a hitch.
7. Use a reliable connection .
We recommend that you avoid public Wi-fi networks (hotels, coffee shops ..), unreliable when you download an update.
Your download will be much safer if you use the internet connection to your home or place of work. There, prefer an ethernet connection faster than Wi-fi.
8. Update your macOS .
Before moving on to a new version of macOS, update the one you currently use.
We have a tendency to skip this step and yet it is fast and very useful. In fact, ensure that you have the latest version, enables you to avoid lots of small bugs.
To do this, go to your App Store and click on Updates.
Also, make sure that you have updated all your applications, those you purchase from the App Store and downloaded elsewhere.
For apps purchased in the App Store, click the Updates tab (Updates) and then update (Update All). You just have to enter your Apple id and password to begin the process.
For others, you will need to update them one at a time. To avoid disappointment, be sure to verify that they are compatible with the new version of the operating system that you will download.
For installation, simply follow the steps displayed on the screen. Please note that there will be a restart of your Mac and the process could take between 10 and 20 minutes.