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   How do I reinstall Mac OS X?

   • If you’re reinstalling on a Mac laptop, plug in the power adapter. You can use macOS Recovery, the built-in recovery system on your Mac, to erase and reinstall macOS. In the Recovery app window, select Disk Utility, then click Continue. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.

   Erase and reinstall macOS - Apple Support

   support.apple.com/guide/mac-help/erase-and-reinstall-macos-mh27903/mac

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   What if I can't install macOS from recovery?

   • If you can’t complete macOS installation from macOS Recovery, make sure that your Mac is connected to the internet,* and learn what to do if an error occurred while updating or installing macOS. If you still can’t install macOS from Recovery, contact Apple Support. * You need a broadband internet connection that uses DHCP over Wi-Fi or Ethernet.

   How to reinstall macOS - Apple Support

   support.apple.com/en-us/102655

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   Why do I need to reinstall macOS?

   • There are a number of reasons you may want to reinstall macOS. It could be that your Mac is misbehaving, and nothing you’ve tried will fix it. Sometimes, reinstalling the macOS is the only way. Or it could be that you have installed the most recent version and discovered you don’t like it or it’s not compatible with some apps you need to use.

   How to reinstall macOS on your Mac: the ultimate guide | MacPaw

   macpaw.com/how-to/reinstall-macos

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   How to reinstall macOS using Recovery mode?

   • To reinstall macOS using Recovery mode you have to connect to the internet. Follow these steps to connect to the internet in Recovery mode if your Mac hasn’t automatically connected: Click the Wi-Fi menu in the upper-right corner of the screen. Select a Wi-Fi network. Enter the Wi-Fi password (if required).

   How to reinstall macOS | Macworld

   www.macworld.com/article/671404/how-to-reinstall-macos.html

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   How do I install a new version of Mac OS X?

   • On a Mac with Apple silicon, Recovery installs the current version of the most recently installed macOS. Press and hold the power button on your Mac. As you continue to hold the power button, your Mac turns on and loads startup options. When you see the startup options window, release the power button.

   How to reinstall macOS - Apple Support

   support.apple.com/en-us/102655

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   How do I delete files from my Mac?

   • The easiest way is to use the Erase Assistant that Apple added to macOS in the 2021 update. This option isn't available on all Mac models, so your Mac will have to satisfy a few requirements in order to have access to it. To start, you'll need to be running macOS 12.0 Monterey or later.

   How to Wipe Your Mac and Reinstall macOS from Scratch - How-To Geek

   www.howtogeek.com/186860/wipe-mac-and-reinstall-macos/

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2. Videos

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     How To Erase & Factory Reset A Mac & Reinstall macOS - Step By Step Guide

     8 Sep 2019

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     2:43

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     How to reinstall macOS from macOS Recovery — Apple Support

     19 Aug 2020

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     4:49

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     How To Reinstall macOS On ANY Mac

     9 Aug 2022

     515K views

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3. support.apple.com › guide › mac-helpErase and reinstall macOS - Apple Support

   support.apple.com › guide › mac-help

   • Cached

   You can use macOS Recovery, the built-in recovery system on your Mac, to erase and reinstall macOS. Choose Apple menu > Restart, then immediately press and hold Command-R. In the Recovery app window, select Disk Utility, then click Continue.

4. support.apple.com › en-us › 102655How to reinstall macOS - Apple Support

   support.apple.com › en-us › 102655

   • Cached

   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.

5. support.apple.com › en-gb › 102655How to reinstall macOS – Apple Support (UK)

   support.apple.com › en-gb › 102655

   • Cached

   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.

6. www.howtogeek.com › 186860 › wipe-mac-and-reinstallHow to Wipe Your Mac and Reinstall macOS from Scratch

   www.howtogeek.com › 186860 › wipe-mac-and-reinstall

   • Cached

   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.

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7. www.macworld.com › article › 671404How to reinstall macOS - Macworld

   www.macworld.com › article › 671404

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   • Author: Karen Haslam

   • Back up your Mac. You don’t have to wipe you Mac, but if you are trying to fix a problem, or you are intending to pass on, or sell, the Mac, then you will need to wipe your Mac as part of this process.
   • Erase your drive (M1 and M2-series Macs) If you are planning to sell or pass on your Mac, or you want to do a clean install of macOS to solve issues with your Mac, you will want to erase your hard drive before reinstalling the operating system.
   • Enter Recovery mode. The process for entering Recovery mode depends on the Mac you are using. On a Mac with an Intel processor you need to press and hold the Command and R buttons during start up until you hear the startup chime and see either a spinning globe or Apple logo.
   • Erase your hard drive (Intel Macs without T2 chip) If you have a Mac with an Intel processor that doesn’t also have a T2 chip and you want to delete the data on your Mac’s hard drive you need to use Disk Utility accessed via Recovery mode (you have to access the drive via Recovery because it’s not possible to delete the drive when you are accessing it).

8. www.youtube.com › watchHow to reinstall macOS from macOS Recovery — Apple Support

   www.youtube.com › watch

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   Learn how to reinstall the operating system on your Mac, using macOS Recovery.To learn more about this topic, visit the follow article:How to reinstall macOS...

   • Video Duration: 3 min
   • Views: 1.5M

   • Author: Apple Support

9. macpaw.com › how-to › reinstall-macosHow to reinstall macOS on your Mac: the ultimate guide - MacPaw

   macpaw.com › how-to › reinstall-macos

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   Apr 12, 2023 · Apple Silicon. Shut down your Mac. Press and hold the power button until you see the Startup Options window. Click Options > Continue. When the macOS Utilities window appears, select Reinstall macOS.