Frequent question: How do I reinstall Mac OS without losing files?

How do I reinstall macOS without losing data?

Reinstalling macOS does not remove data from your Mac. To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.

Will I lose everything if I reinstall macOS?

Technically speaking, simply reinstalling macOS won’t erase your disk either delete files. You probably don’t need to erase, unless you’re selling or giving away your Mac or having an issue that requires you to wipe.

How do I reinstall Big Sur without losing data?

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 wipe my Mac and reinstall OS?

Restart your Mac. 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. In the Recovery app window, select Reinstall for your macOS release, click Continue, then follow the onscreen instructions.

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How do I reinstall an old macOS?

Here are the steps Apple describes:

  1. Start up your Mac pressing Shift-Option/Alt-Command-R.
  2. Once you see the macOS Utilities screen choose the Reinstall macOS option.
  3. Click Continue and follow the on-screen instructions.
  4. Select your startup disk and click Install.
  5. Your Mac will restart once the installation is complete.

What will happen if I reinstall macOS?

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 corrupted macOS?

How to Fix a Corrupted Hard Drive on a Mac

  1. Repair the Corrupted Hard Drive Using Disk Utility. …
  2. Initiate the FSCK Command. …
  3. Try Free Software to Recover Mac Hard Drive Data. …
  4. Recover from a Time Machine backup drive. …
  5. Hire a hard drive recovery service for Mac. …
  6. Shut Down Your Mac Safely. …
  7. ⚡ Prevent Spills and Exposure.

What happens when I reinstall macOS Big Sur?

Reinstalling a fresh copy of macOS Big Sur will not affect your current settings. Applications and settings will remain the same. Completing this process replaces the core files of macOS Big Sur in case something wasn’t working right before.

How do I restore my Mac to factory?

How to factory reset MacBook and Mac desktops

  1. Make a fresh backup of your Mac.
  2. Open System Preferences.
  3. Click System Preferences in the menu bar > Erase All Contents and Settings.
  4. Follow the prompts to fully erase your Mac.
  5. Like iOS, the new erase process in macOS Monterey handles everything to fully wipe your Mac.
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How do I reset my Mac to factory?

Turn on your Mac and immediately press and hold these four keys together: Option, Command, P and R. Release the keys after about 20 seconds. This will clear user settings from the memory and restore certain security features that may have been altered previously.

Can you install macOS from USB?

Using Your Bootable macOS USB

You can perform a fresh install of macOS, restore from a Time Machine backup, or access tools like Disk Utility from the macOS Utilities screen. You can also use your USB drive to upgrade macOS to the latest version.