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Unlike a macOS Catalina upgrade, the clean install process would be a bit tedious. Step 1: Create a Bootable Installer with Terminal The process to clean install macOS Catalina can be divided into two parts – firstly we will create a bootable media for it and later would use the same to install macOS.

If you don't want to lose your data, then take its extensive backup beforehand.

You should have a USB drive or an external hard disk with at least 16 GB of free storage.

The entire process would take at least 1-2 hours.

Therefore, you should know these things in advance: Kindly note that a fresh installation of macOS would remove all the existing data, apps, or saved settings from your system. In this case, you can perform a clean installation of macOS Catalina 10.15 from scratch.

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If your Mac has inherited some problems, then an upgrade won't be able to fix it. The macOS Catalina upgrade would retain the user data, apps, third-party app data, and so on.

Macos catalina 10.15 download how to#

Part 3: How to Clean Install macOS Catalina 10.15Īpart from just upgrading macOS on their system, some users choose to perform a clean install instead. You can follow the simple on-screen instructions afterward to complete the macOS Catalina installation. This will download the macOS profile and will automatically restart your system afterward.

If the profile of macOS Catalina 10.15 is listed, then click on the 'Upgrade Now' button adjacent to it.

This will launch a dedicated section, listing the profile of the latest macOS version that is available.

Under the Overview section, click on the 'Software Update' button.

From the Finder, go to the About This Mac feature.

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Though, the most recommended solution to do macOS Catalina upgrade is by visiting its Software Update settings.

Alternatively, you can also go to the official website of Apple and click on the 'Upgrade Now' button to start the process.

Read the features and just install macOS Catalina from here.

If your system is running on macOS High Sierra, Sierra, or El Capitan, then you can just go to the App Store and look for Catalina.

Once you have taken care of all the above-mentioned prerequisites, simply follow these steps to learn how to update to macOS Catalina. To do this, you can go to the official website of Apple, visit the Mac's App Store, or go to its Software Update settings. If you are already using a stable version of macOS, then you can just upgrade to the latest macOS Catalina easily. Part 2: How to Upgrade to macOS Catalina 10.15 If it is packed with too much data, then you can delete any unwanted content from its hard drive. You can go to Finder > About This Mac > Storage section to see how much empty space is there on your Mac. Although, macOS Yosemite users would need at least 18.5 GB of free space instead. To successfully install macOS Catalina, you need a 4 GB RAM on your system and at least 12.5 GB free space on the hard drive. Furthermore, you can visit the Account Details option from here to know more about the linked Apple account. You can go to the iCloud application on your Mac to check the same.

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Therefore, you should know your Apple ID and password in advance. If you wish to do a macOS Catalina upgrade, then you might be asked your Apple ID for verification. Read More: Learn 3 Simple Methods to Backup macOS From here, you can take an extensive backup of your Mac to the attached media. Simply attach an external hard drive to your Mac and launch Time Machine on it. To do this, you can either manually move your files somewhere else or use Time Machine. If you don't want to encounter a similar situation, then consider taking a backup of your data beforehand. There are times when users end up losing their data while upgrading to a new operating system. Sign-out or offload apps with too much data.Delete Safari History or any other browser data.Get rid of any file that is not important.Uninstall all the old apps that you no longer need.Simply follow these suggestions to clean up your system quickly: You mustn't have a lot of unwanted space on your Mac before upgrade to macOS Catalina.

Here are all the devices that would support the new macOS Catalina: Ideally, if your system runs on macOS Mojave (except 2010-12 Mac Pros), then it would be compatible with macOS 10.15 too.

Check that your Mac is compatible with macOS Catalinaįirst things first – make sure that your Mac would support the new OS or not.

For instance, you should check if your Mac is compatible with macOS Catalina or it has enough free space on it or not.

Part 1: Preparations for Installing macOS Catalina 10.15īefore you start the installation process, there are certain things that you need to take care of. Part 4: How to Recover Lost Data after Updating to macOS Catalina.Part 3: How to Clean Install macOS Catalina 10.15.Part 2: How to Upgrade to macOS Catalina 10.15.Part 1: Preparations for Installing macOS Catalina 10.15.