Once your data is wiped, you can then start the reinstallation process.

This process will take a few hours, so make sure that your Mac is plugged in. This step will start the process of wiping your Mac’s hard drive.

Select Erase by the bottom right corner of the screen.

Most older computers will be Journaled, while most modern laptops that come with solid-state drives (SSD) are APFS-formatted. The Disk Utility will show the compatible format by default.

Format: You can choose either APFS (Apple File System) or macOS Extended (Journaled).

Name: You can choose any name you want, but it’s recommended to name the disk something generic.Click Erase and fill in the name, format, and Scheme.This will be the highest option in the device tree. Select your Mac’s drive and then click Erase.Click Disc Utility and then click continue.While your computer is restarting, press and holding the Command + R keys.You shouldĭo this if you are selling your device or giving it to someone else to Mac operating system, you will need to wipe the internal hard drive first. If you wish to do a clean installation of your How to Install macOS By Wiping Hard Drive First Click Agree and then select your hard drive in the next window. You will be shown the terms and conditions for installing the OS. When the installer window pops up, click Continue.When you are in recovery mode, click Reinstall macOS and then click continue.When the Apple logo appears, release the command and R keys. Keep holding them down until you see the Apple logo appear on your screen. As your computer is restarting, hold down the Command + R keys.You can do this by holding down the power button or by clicking the Apple logo by the top left corner of the screen and selecting Restart. Note: Your Mac needs to be connected to the internet to install or reinstall macOS. Follow the steps below to get a new version of your operating system: Using the Recovery Mode is an easy way to reinstall your Mac OS.

How to Reinstall Mac OS Using Recovery Mode Warning: Make sure you do a full backup of your files before you reinstall your operating system. Here’s how to reinstall your Mac operating system(OS). This process is actually straightforward and simple. Has your Mac computer been running into issues lately? It might be time to give it a fresh OS (operating system) installation.

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