How to Clean Install macOS Sequoia | Step-by-Step

macOS Sequoia is Apple's newest operating system, designed to boost performance and add new features. To ensure your Mac runs smoothly, you can install macOS Sequoia cleanly. This means you'll remove the old system and start fresh. It can help speed up your Mac and fix issues from previous updates, especially if you have an older model.

However, multiple users have reported problems while installing macOS Sequoia. Worry not! We'll address all the installation issues and provide their solutions. Learn how to clean install macOS Sequoia in this guide. Now, let's get started!

Back Up Mac Before Clean Install macOS 15

Sometimes, upgrading your macOS can cause you to lose precious data. To prevent this situation, it is necessary to back up your Mac before the clean installation of the macOS Sequoia.

For this reason, the best alternative is EaseUS Data Recovery Wizard for Mac. This program can assist whether you're seeking a backup solution or intending to make a significant change to your software.

This fantastic data recovery program allows users to back up their Mac without the Time Machine and recover lost files after a macOS update or downgrade. EaseUS provides a great way to protect your information in the event of an unexpected data loss. That way, you may install macOS Sequoia cleanly and safely without worrying about your data being compromised.

Check the following guide to back up your Mac before learning how to clean install macOS Sequoia.

Step 1. Click "Disk Backup" > "Create Backup" > "Next" in EaseUS Data Recovery Wizard for Mac's main interface. You can create a drive backup image file in case the data is overwritten.

Step 2. Select an internal volume to back up, and click "Create Backup". If you want to create backups and recover data from an external hard drive, USB flash drive, or SD card, remember to connect the storage device to your Mac in advance.

Step 3. Choose a place to save your backup files, and change the name of your backup file, then click "Save". It is not wise to save backups in the same storage device that you want to recover data from.

Is this information helpful? Share this page on social media to help others prepare for a clean install of macOS 15, and EaseUS Data Recovery Wizard for Mac can also help you recover missing photos after the macOS Sequoia update.

How to Clean Install macOS Sequoia (Beta 6)

When installing macOS Sequoia (Beta 3), a clean install is an excellent approach to guarantee a system that runs as efficiently as possible. You can have a seamless experience with the newest macOS features, eliminate unneeded files, and fix current problems with a clean install. macOS Sequoia's new features are easy to set up and enjoy with the correct installation approach. Here's the detailed method for this!

✅Step 1. Download the macOS Sequoia Beta Installation File

After backing up your MacOS, the next step is downloading the Sequoia beta installer.

Step 1. Download the macOS Sequoia Beta Installer. Locate the .pkg file in the Downloads folder and move it to the Applications folder.

Step 2. Open the "InstallAssistant.pkg" by double-clicking it.

Step 3. Follow the prompts: Click "Continue," then "Install," enter your password, click "Install Software," and then click "Close."

Step 4. Verify that "Install macOS 15 beta" is now in the Applications folder in Finder.

To download the macOS 15 Sequoia installer, you can also open Terminal and use the software update command. Follow these steps:

Step 1. Open Terminal by accessing "Applications > Utilities." Use this command to list available installers: "softwareupdate --list-full-installers."

Step 2. Press "Return" to view the macOS 15 Sequoia installer.

Step 3. Next, download the installer to your Applications folder with this command: "softwareupdate --fetch-full-installer --full-installer-version 15.0". Press "Return" from the keyboard to begin the download.

Was it helpful? Share this page on social media to help others start their macOS Sequoia Beta installation and you can also install macOS Sequoia on unsupported Mac with this method!

✅Step 2. Create Sequoia Beta Bootable Installer with USB

Now, let's create a macOS Sequoia bootable USB:

Step 1. Connect a 16 GB USB drive to your Mac.

Note: You can easily find a 16GB USB flash drive at an affordable price, ensuring ample space for the macOS Sequoia Beta installer.

Step 2. Set the USB drive's format to macOS Extended while formatting it from "Disk Utility."

Step 3. Access Terminal and type sudo /Applications/Install\ macOS\ 15\ Beta.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume.

Step 4. Press the Return key. Enter your password, press Return again, and follow the on-screen instructions when prompted.

Share this guide to help others create a Sequoia Beta bootable installer and install macOS Sequoia from a USB!

✅Step 3. Erase Your Mac with Erase Assistant

Before performing a clean install of macOS Sequoia beta, you must erase your Mac.

Step 1. Open the Apple menu and select "System Settings."

Step 2. Go to "General," then choose "Transfer or Reset."

Step 3. Choose "Erase All Content and Settings" and follow the instructions to finish the process.

✅Step 4. Clean Install macOS Sequoia with Bootable Installer

To perform a clean install of macOS Sequoia beta, follow these steps:

Step 1. Turn off your Mac. Plug the bootable installer into your Mac.

Step 2. Press and hold the Power button until the "Loading Startup Options" window displays your bootable volumes.

Step 3. Select the bootable installer and click "Continue." Follow the on-screen instructions to complete the installation.

Ready to clean install macOS Sequoia? Share this page to help others use their bootable installer for a fresh setup!

Summary

In this article, we have guided you through performing a clean installation of macOS Sequoia. Using a USB device, you first create a bootable installer. Then, you erase your Mac to ensure a fresh start. Finally, you install the new macOS from the bootable drive. These methods allow you to install macOS Sequoia on your Mac from scratch. Use EaseUS Data Recovery Wizard for Mac for backup and recovery to ensure your data is always safe.

Clean Install macOS 15 FAQs

Now, let's have a look at some common FAQs related to this process:

1. Should I clean install macOS Sequoia?

Cleaning up your macOS Sequoia installation can be helpful if you want to start over or are having problems with old macOS. Deleting all previous information and configuration gives you a brand-new, optimized system.

2. How do I clean install macOS 15 with USB?

Make a bootable installer. Then, to install macOS, restart your Mac while holding down the Power button, choose the USB disk, and adhere to the instructions.

3. How can I create a macOS Sequoia bootable installer?

To install macOS Sequoia Beta, start by formatting your USB device. Next, download the macOS Sequoia Beta file. Use Terminal to set up the USB Installer. This way, you'll have a stable backup and a bootable installer for your Mac.