How do I reinstall Mac OS on Macbook Air?

How do I reinstall OS on Macbook Air?

Reinstall macOS

  1. Install the latest version of macOS compatible with your computer: Press and hold Option-Command-R.
  2. Reinstall your computer’s original version of macOS (including available updates): Press and hold Shift-Option-Command-R.

How do I reinstall Mac OS manually?

Install macOS

  1. Choose Reinstall macOS (or Reinstall OS X) from the utilities window.
  2. Click Continue, then follow the onscreen instructions. You’ll be asked to select your disk. If you don’t see it, click Show All Disks. …
  3. Click Install. Your Mac restarts after installation is complete.

How do I install OSX after erasing hard drive?

How to Install macOS By Wiping Hard Drive First

  1. Restart your Mac.
  2. While your computer is restarting, press and holding the Command + R keys.
  3. Click Disc Utility and then click continue.
  4. Click View > Show All Devices.
  5. Select your Mac’s drive and then click Erase. …
  6. Click Erase and fill in the name, format, and Scheme.

Why can’t I reinstall my macOS?

First, completely shut down your Mac via the Apple Toolbar. Then, hold down Command, Option, P, and R buttons on your keyboard as you restart your Mac. Continue to keep these buttons held until you hear the Mac startup chime twice. After the second chime, let go of the buttons and let your Mac restart as normal.

How do I reset a MacBook Air 2020?

How to reset a MacBook Air or MacBook Pro

  1. Hold down the Command and R keys on the keyboard and turn on the Mac. …
  2. Select your language and continue.
  3. Choose Disk Utility and click Continue.
  4. Choose your startup disk (named Macintosh HD by default) from the sidebar and click the Erase button.

How do you reset a Mac OS?

To reset your Mac, first restart your computer. Then press and hold Command + R until you see the Apple logo. Next, go to Disk Utility > View > View all devices, and choose the top drive. Next, click Erase, fill out the required details, and hit Erase again.

Will I lose data if I reinstall macOS?

2 Answers. Reinstalling macOS from the recovery menu does not erase your data. However, if there is a corruption issue, your data may be corrupted as well, its really hard to tell. … Reinatalling the os alone does not erase data.

How do I reinstall macOS Online?

How to use Internet Recovery to reinstall macOS

  1. Shut down your Mac.
  2. Hold down Command-Option/Alt-R and press the Power button. …
  3. Hold down those keys until you a spinning globe and the message “Starting Internet Recovery. …
  4. The message will be replaced with a progress bar. …
  5. Wait for the MacOS Utilities screen to appear.

How do I boot my Mac into recovery mode?

Reboot your Mac. Hold down Option/Alt-Command-R or Shift-Option/Alt-Command-R to force your Mac to boot into macOS Recovery Mode over the internet. This should boot the Mac into Recovery Mode.

How do I reinstall OSX without losing files?

Option #1: Reinstall macOS without Losing Data From Internet Recovery

  1. Click the Apple icon>Restart.
  2. Hold down the key combination: Command+R, you will see the Apple logo.
  3. Then choose “Reinstall macOS Big Sur” from utilities window and click “Continue”.

How do I bypass Internet Recovery on Mac?

Answer: A: Answer: A: Restart the computer holding down the command – option/alt – P – R keys before the gray screen appears. Continue to hold until you hear the startup chime for the second time.

What happens when you reinstall macOS?

2 Answers. It does exactly what it says it does–reinstalls macOS itself. It only touches operating system files that are there in a default configuration, so any preference files, documents and applications that are either changed or not there in the default installer are simply left alone.

How do I fix a Mac installation error?

How to Fix the ‘macOS Could Not Be Installed’ Error

  1. Restart and try the installation again. …
  2. Check the Date & Time setting. …
  3. Free up space. …
  4. Delete the installer. …
  5. Reset the NVRAM. …
  6. Restore from a backup. …
  7. Run Disk First Aid.

Can’t reinstall macOS because disk is locked?

Boot to the Recovery Volume (command – R on a restart or hold down the option/alt key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair Disk and Repair Permissions until you get no errors. Then re-install the OS.

How do I restore my Macintosh HD?

Restore a disk using Disk Utility on Mac

  1. In the Disk Utility app on your Mac, choose View > Show All Devices. …
  2. In the sidebar, select the volume you want to restore, then click the Restore button . …
  3. Click the Restore pop-up menu, then choose the volume you want to copy.
  4. Click Restore, then click Done.
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