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Sep 30, 2024 · How to reinstall macOS. Use macOS Recovery, your computer’s built-in recovery system, to reinstall the Mac operating system. Before you begin. Shut down your Mac. Start up from macOS Recovery. Reinstall macOS from Recovery. If you need help.
- Overview
- On a Mac with Apple silicon
- On an Intel-based Mac with the Apple T2 Security Chip
- On an Intel-based Mac without the Apple T2 Security Chip
You can erase your Mac and use macOS Recovery, the built-in recovery system on your Mac, to reinstall macOS.
WARNING: Erasing your Mac removes all the information from it. Before you start, back up your Mac with Time Machine.
Your computer must be connected to the internet. If you’re reinstalling on a Mac laptop, plug in the power adapter.
1.Erase your Mac using Erase Assistant.
2.Restart your Mac.
3.Choose Apple menu > Shut Down, press and hold the power button until “Loading startup options” appears, select Options, click Continue, then follow the onscreen instructions.
Your computer must be connected to the internet. If you’re reinstalling on a Mac laptop, plug in the power adapter.
1.Erase your Mac using Erase Assistant.
2.Restart your Mac.
3.Choose Apple menu > Restart, then immediately press and hold one of these key combinations, depending on what you want to do:
•Install the latest version of macOS compatible with your computer: Option-Command-R.
•Reinstall your computer’s original version of macOS (including available updates): Option-Shift-Command-R.
Your computer must be connected to the internet. If you’re reinstalling on a Mac laptop, plug in the power adapter.
1.Choose Apple menu > Restart, then immediately press and hold Command-R.
2.In the Recovery app window, select Disk Utility, then click Continue.
3.In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.
4.Type a name for the volume in the Name field, click the Format pop-up menu and choose APFS, then click Erase Volume Group.
5.When the erase process is complete, click Done, then choose Disk Utility > Quit Disk Utility.
Apr 30, 2023 · Option 1: Factory Reset Your Mac. Option 2: Wipe and Reinstall macOS from Scratch. Enjoy Your Squeaky Clean Mac. Key Takeaways. To wipe a modern Mac with Apple Silicon or T2 Security Chip, open System Settings > General > Transfer or Reset and click "Erase All Content and Settings" to open the Erase Assistant.
Aug 29, 2023 · This guide will teach you the steps to create a macOS bootable USB installation on Windows 10 (or 11), which you can use to reinstall or upgrade the Apple OS. Requirements. Create macOS bootable USB installation media. Create a GPT partition on a USB flash drive.
- Before you dive into this guide, you’ll need a few things: 1. A broken Mac computer with Mac OS X or macOS Sierra (version 10.12 or later). 2. A tr...
- To create a bootable USB drive with the latest version of macOS, do the following: 1. Download and install TransMac on your Windows PC. This is a p...
- If the USB flash drive is not working using TransMac, it could be still a partition problem. In this case, you want to redo the entire process agai...
Mar 29, 2017 · Start by using Boot Camp Assistant to remove the Windows volume and rejoin the space to the OS X volume. Install Sierra or El Capitan from Scratch. Restart the computer. Immediately after the chime hold down the CommandandRkeys until the Apple logo appears.
Nov 23, 2014 · Re/boot the computer and do not actually press this combination until the instant you hear the obnoxious “startup chime” (AKA “macOS is broken again everyone far and wide hear it!”), and hold this combination until you see the Apple logo, then feel free to release.
Oct 20, 2024 · Part 1. Preparing to Install. Download Article. 1. Check your computer's specifications. Your Windows computer must have an Intel Core i3, i5, i7 or i9 processor in order to run macOS Catalina, as well as a minimum of four gigabytes of RAM. [1] . To check these specs: Open Start. . Type in system information.
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