How do I reinstall Mac OS without losing files?

Will I lose everything 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.

How do I reset my Mac without losing everything?

Step 1: Hold the Command + R keys until the MacBook’s utility window hasn’t opened. Step 2: Select Disk Utility and click on Continue. Step 4: Select the format as MAC OS Extended (Journaled) and click on Erase. Step 5: Wait till the MacBook is completely reset and then go back to the Disk Utility’s main window.

How do I do a clean install of OSX?

Step 4: Wipe your Mac

1. Connect your boot drive.
2. Start up – or restart – your Mac while holding down the Option key (also known as Alt). …
3. Choose to install your chosen version of macOS from the external drive.
4. Select Disk Utility.
5. Select your Mac’s start up disc, probably called Macintosh HD or Home.
6. Click on Erase.

2 февр. 2021 г.

How do I reinstall Catalina on my Mac?

The correct way to reinstall macOS Catalina is to use your Mac’s Recovery Mode:

1. Restart your Mac and then hold down ⌘ + R to activate Recovery Mode.
2. In the first window, select Reinstall macOS ➙ Continue.
3. Agree to the Terms & Conditions.
4. Select the hard drive you’d like to reinstall mac OS Catalina to and click Install.

4 июл. 2019 г.

What happens if you 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 restore my Mac to original settings?

How to Factory Reset: MacBook

1. Restart your computer: hold the power button > select Restart when it appears.
2. While the computer restarts, hold down the ‘Command’ and ‘R’ keys.
3. Once you see the Apple logo appear, release the ‘Command and R keys’
4. When you see a Recovery Mode menu, select Disk Utility.

1 февр. 2021 г.

How do you completely reset a Mac?

Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. Release the keys after about 20 seconds. This clears user settings from memory and restores certain security features that might have been altered. Learn more about resetting NVRAM or PRAM.

How do I reinstall Mac from scratch?

Select your startup disk on the left, then click Erase. Click the Format pop-up menu (APFS should be selected), enter a name, then click Erase. After the disk is erased, choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS,” click Continue, then follow the onscreen instructions.

What’s the difference between Apfs and Mac OS Extended?

APFS, or “Apple File System,” is one of the new features in macOS High Sierra. … Mac OS Extended, also known as HFS Plus or HFS+, is the file system used on all Macs from 1998 until now. On macOS High Sierra, it’s used on all mechanical and hybrid drives, and older versions of macOS used it by default for all drives.

How do I reinstall OSX without Internet?

Installing a fresh copy of macOS via Recovery Mode

1. Restart your Mac while holding down the ‘Command+R’ buttons.
2. Release these buttons as soon as you see the Apple logo. Your Mac should now boot into Recovery Mode.
3. Select ‘Reinstall macOS,’ and then click ‘Continue. ‘
4. If prompted, enter your Apple ID.

How long does it take to reinstall macOS Catalina?

The macOS Catalina installation should take about 20 to 50 minutes if everything works right.

How do I reinstall Mac OSX recovery?

Start up from macOS Recovery

Select Options, then click Continue. Intel processor: Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.

How do I reinstall OSX Catalina from USB?

Access System Preferences > Startup Disk and choose your Catalina installer. Restart your Mac and hold Command-R. Connect your bootable USB. In the macOS Utilities window, click Reinstall a new copy of macOS.