If your Mac is having problems or you need to start from scratch, reinstalling macOS may be the solution. Follow these simple steps to do it using the recovery mode, a special tool that comes with your Mac to fix serious problems.
What is recovery mode?
Recovery mode is a special feature of macOS that gives you access to useful tools such as reinstalling the operating system, accessing disk utilities, and the ability to search for help online. It's like your Mac's “first aid kit”.
When should you reinstall macOS?
You may need to reinstall macOS if:
- Your Mac is running slow or has persistent crashes.
- You have deleted important files by mistake.
- You want to sell your Mac and need to erase everything.
How to access recovery mode
- Turn off your Mac completely.
- Turn it on while holding down the keys Command (⌘) + R.
- Release the keys when you see the Apple logo or a globe.
How to connect your Mac to the Internet
To download a new copy of macOS, your Mac needs to be connected to a Wi-Fi network. Select your network from the Wi-Fi menu in the upper right corner of the screen.
How to reinstall macOS step by step
- In the macOS utilities window, select the option. Reinstall macOS.
- Click “Continue” and follow the instructions on the screen.
- Select your Mac's primary hard drive (usually called «Macintosh HD»).
Should you erase the disk before reinstalling?
If you need to completely clean your Mac, you can use the option of Disk Utility before installing. This will delete all data on the selected disk.
How to download and install macOS
Your Mac will automatically download the latest compatible macOS version. This process may take several minutes or hours, depending on your internet connection.
Final tips for reinstalling macOS
- Make sure you have a backup copy of your important data before you start.
- Be patient, the process may seem long, but it is necessary to ensure a clean installation.
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