How to enter USB boot mode by booting the computer

Introduction: How to enter U disk boot mode after booting up

Tools and materials:

Brand model: Apple MacBook Pro

Operating system Version: macOS Catalina

Software version: Disk Utility 19.0

1. Choose a suitable U disk

1. First, we need to choose a suitable U disk as a boot medium. The capacity of the USB flash drive should be large enough, generally at least 16GB is recommended, in order to store the operating system image file.

2. At the same time, the reading and writing speed of the U disk is also an important consideration. Higher read and write speeds can make the boot and installation process more efficient.

2. Prepare the boot disk

1. Use Disk Utility software to format the USB disk into Mac OS Extended (Journaled) format and select GUID Partition Map as the partition scheme.

2. Download the appropriate operating system image file and use Disk Utility software to write the image file to the USB flash drive.

3. Enter U disk boot mode

1. Restart the computer and hold down the Option (or Alt) key until the startup options interface appears.

2. In the startup options interface, select the U disk as the startup medium.

3. Wait for the computer to boot from the USB flash drive and enter the installation interface.

4. Summary

By selecting the appropriate USB flash drive, preparing the boot disk, and entering the USB boot mode, we can easily install or repair the operating system. During use, we should pay attention to the capacity and reading and writing speed of the USB flash drive, as well as the source and integrity of the operating system image file.

In short, mastering the method of entering U disk boot mode can help us better manage and maintain the computer system.

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