How do I reinstall Macintosh HD?

Enter Recovery (either by pressing Command+R on an Intel Mac or by pressing and holding the power button on a M1 Mac) A macOS Utilities window will open, on which you will see the options to Restore From Time Machine Backup, Reinstall macOS [version], Safari (or Get Help Online in older versions) and Disk Utility.

Deuxièmement What happens if you erase the Macintosh HD?

Erasing your Mac permanently deletes its files. If you want to restore your Mac to factory settings, such as when you’re preparing it for a new owner, first find out what to do before you sell, give away or trade in your Mac.

De plus, How do I restore factory settings on my MacBook air?

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 I format and reinstall my MacBook air?

Erase and reinstall macOS

1. Start up your computer in macOS Recovery: …
2. In the Recovery app window, select Disk Utility, then click Continue.
3. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.

ainsi Can you erase Macintosh HD data? Macintosh HD — The storage drive volume where macOS files and apps are stored. The volume is read-only, and the Mac user cannot create, delete, or edit any system files. Macintosh HD Data — The storage drive volume where Mac user data is stored.

How do you reset a MacBook Air 2021?

On a Mac with Apple silicon: Choose Apple menu > Shut Down, press and hold the power button until you see “Loading startup options,” select Options, click Continue, then follow the onscreen instructions. On an Intel-based Mac: Choose Apple menu > Restart, then immediately press and hold Command-R.

How do I wipe my Mac and start over?

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.

How do I clear my MacBook Air to sell?

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 will clear user settings from the memory and restore certain security features that may have been altered previously.

How do I wipe my Mac and reinstall OS?

Erase and reinstall macOS

1. Start up your computer in macOS Recovery: …
2. In the Recovery app window, select Disk Utility, then click Continue.
3. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.

How do I restore my MacBook Air to factory settings without CD?

How to Reset a MacBook Pro to Factory Settings Without a Disc

1. Set the MacBook Pro to restart. …
2. Select “Disk Utility” from the next screen and click “Continue.” Choose your hard drive in the list and click “Erase.”
3. Click the “Mac OS Extended (Journaled)” option in the new dialog.

How do I clean up my Macintosh HD?

How to Clean Mac Hard Drive Manually

1. Clean up cache. You’ve probably heard “Remove your cache” as a web browser troubleshooting tip. …
2. Uninstall apps you don’t use. …
3. Clean out useless duplicates. …
4. Empty the Trash. …
5. Reduce clutter. …
6. Delete large and old files. …
7. Remove old iOS backups. …
8. Wipe out Language files.

How do I wipe my 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 I turn my MacBook Air on?

MacBooks with Function Keys

At the right end of the keyboard is the physical Power button. Holding down this button will turn on your MacBook. Alternatively, if you’re using the 2018 MacBook Pro or 2018 MacBook Air, pressing any key on the keyboard or clicking the trackpad will turn on the computer.

Where is the power button on MacBook Air?

Touch ID (the power button) is located on the right side of the function keys. After you set up Touch ID, you can use your fingerprint to unlock MacBook Air, quickly lock your screen, or make purchases from the App Store, Apple TV app, and Book Store, and on websites using Apple Pay.

How do you force start a MacBook?

Follow these steps. Press and hold the power button on your Mac for at least 10 seconds, then release. If your Mac is turned on, this forces it to turn off. If you see no change on your Mac, press and release the power button normally.

What is the difference between Mac HD and Mac HD data?

Macintosh HD — The storage drive volume where macOS files and apps are stored. … Macintosh HD Data — The storage drive volume where Mac user data is stored. The volume has read-write access, enabling Mac users to manage their files.

Why is my macOS not installing?

Some of the most common reasons macOS can’t complete the installation include: Not enough free storage on your Mac. Corruptions in the macOS installer file. Problems with your Mac’s startup disk.

How do I restore my Mac without reinstalling operating system?

How to use the Erase All Content and Settings feature to reset a Mac

1. Open Apple menu > System Preferences.
2. Select System Preferences from the Apple menu bar.
3. Choose Erase All Content and Settings.
4. Type your admin password and click OK and Continue.
5. Read the warnings and select Erase All Content & Settings.

Can you wipe a MacBook without the password?

Boot into Recovery Mode by holding Cmd + R when you’re powering on the machine. At the menu that you will see, go to Disk Utility, select the lowest hard drive partition you can see, then click Erase.

How do I clean up my Mac to make it run faster?

Here are the top ways to speed up a Mac:

1. Clean up system files and documents. A clean Mac is a fast Mac. …
2. Detect & Kill Demanding Processes. …
3. Speed up startup time: Manage startup programs. …
4. Remove unused apps. …
5. Run a macOS system update. …
6. Upgrade your RAM. …
7. Swap your HDD for an SSD. …
8. Reduce Visual Effects.

How do I clean my Mac of viruses?

How to get rid of a virus on a Mac

1. Find and open Activity Monitor. …
2. Find and stop programs that are harming your computer. …
3. You can drag programs straight from your Applications folder to the Trash. …
4. Open the “Safari Extensions” menu. …
5. Open your System Preferences. …
6. You can pick and choose which programs open at startup.

How do I defrag Macbook Pro?

Here are the steps for optimizing your Mac:

1. Open Disk Utility (Applications > Utilities).
2. Choose your startup disk.
3. Click the First Aid tab.
4. Click Verify Disk Permissions to check permissions.
5. Click Repair Disk Permissions to repair any inconsistent permissions.

---

Authors: 11 – Editors: 22 – Last Updated: 13 days ago – References : 35