Tutorial: How to Reinstall macOS on MacBook via USB for Optimal Performance

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After prolonged use, a MacBook accumulates numerous applications and junk files, leading to performance issues and sluggishness compared to its initial state. To address this, you can reset your MacBook to its factory settings by erasing all data. This article guides you through the process of reinstalling your MacBook using a USB drive, providing you with a fresh device.

How to reinstall MacBook using USB

Author: Nguyen Thang Khang, Posted on 07/05/22

After prolonged use, a MacBook accumulates numerous applications and junk files, leading to performance issues and sluggishness compared to its initial state. To address this, you can reset your MacBook to its factory settings by erasing all data. This article guides you through the process of reinstalling your MacBook using a USB drive, providing you with a fresh device.

How to reinstall MacBook using USB

To install a macOS version, you need the Installer of that macOS version. Quickly access it via the link below to download the suitable macOS version.

Step 1: After successfully downloading, access the link below to get the Terminal code snippet directly from Apple.

Access link here

Step 2: Plug in your USB, open Spotlight, and search for Disk Utility.

Step 3: Next, select the option as shown in the image and choose Show all devices.

You select the USB you just plugged in > Then click on the erase option.

Step 4: Here, you choose Mac OS Extended or APFS format and keep the USB name unchanged. Finally, you click Erase, wait for a while, and your USB will be formatted to the best-supported format for macOS.

Step 5: Next, you open Spotlight and search for Terminal.

Then, you copy the code snippet obtained in step 1 paste it, and enter your password. Wait for a while, and the installation file will be installed on the USB.

Step 6: After installation is complete, restart your computer > hold down the Option key.

And select Boot from USB.

Step 7: macOS Recovery appears, and you select Disk Utility > Erase all data on the hard drive containing macOS (similar to erasing data on USB in step 2).

Step 8: Then, you select the Reinstall macOS option.

Step 9: Here, you continue all and select the drive to reinstall macOS. Wait about 1 to 2 hours for your MacBook to return to the startup screen.

So, I've shared how to reinstall MacBook via USB. If you find the article helpful, please give it a like and a share. Thank you very much for watching.

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Frequently Asked Questions

What steps should I follow to reset my MacBook to factory settings?

To reset your MacBook, first back up your data. Then, restart your Mac, hold down the Option key, and select your USB drive. Next, erase the hard drive in Disk Utility, and choose the Reinstall macOS option. Follow the prompts to complete the reset.

Can I reinstall macOS using a USB drive and what is the process?

Yes, you can reinstall macOS using a USB drive. Download the macOS installer, format the USB using Disk Utility, and install the macOS files on the USB. Restart your Mac, hold the Option key, select the USB, and follow the prompts to reinstall.

How do I prepare my USB drive for macOS installation?

To prepare your USB drive, plug it into your Mac, open Disk Utility, select your USB, and click on the erase option. Choose Mac OS Extended or APFS format, keep the USB name unchanged, and click Erase to format it for macOS.

Is it necessary to erase all data before reinstalling macOS on a MacBook?

Yes, erasing all data is essential before reinstalling macOS. This ensures that any old files or applications do not interfere with the new installation, providing a fresh start for your MacBook.

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