Best Answer: How Do I Completely Reinstall Mac Os X?
Contents Restart Your Mac. While the Startup Disc Is Waking Up, Hold Down the Command+R Keys Simultaneously. You’re Mac Will Boot into macOS Recover. Click on...
Contents
Restart your Mac. While the startup disc is waking up, hold down the Command+R keys simultaneously. You’re Mac will boot into macOS Recover. Click on Reinstall macOS (or Reinstall OS X where applicable) to reinstall the operating system that came with your Mac.
How do I wipe my Mac and reinstall OS X?
If you’re reinstalling on a Mac notebook computer, plug in the power adapter.
- Start up your computer in macOS Recovery: …
- 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.
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How do I do a clean install of Mac OS X?
Step 4: Wipe your Mac
- Connect your boot drive.
- Start up – or restart – your Mac while holding down the Option key (also known as Alt). …
- Choose to install your chosen version of macOS from the external drive.
- Select Disk Utility.
- Select your Mac’s start up disc, probably called Macintosh HD or Home.
- Click on Erase.
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