How to create macOS USB

Creating a bootable USB drive for macOS is a useful tool that allows you to install or upgrade macOS on your computer, or perform maintenance tasks like disk repair or disk formatting. Here are the steps you need to follow:

Before you begin, you will need the following:

• A USB flash drive with at least 8 GB of storage.
• The macOS installer. You can download this from the Mac App Store or the Apple Developer website.

Step 1: Download the macOS installer

The first step is to download the macOS installer from the Mac App Store or the Apple Developer website. Once downloaded, the installer will appear in your Applications folder.

Step 2: Format the USB drive

The second step is to format the USB drive. This will erase all data on the drive, so make sure you have backed up any important files before proceeding.

1. Insert the USB drive into your computer.
2. Open Disk Utility. You can find this in the Utilities folder within your Applications folder.
3. Select the USB drive from the list of drives on the left-hand side.
4. Click on the "Erase" button in the toolbar.
5. In the Erase dialog box, select "Mac OS Extended (Journaled)" as the format and give the drive a name.
6. Click on the "Erase" button.

Step 3: Create a bootable USB drive

Once the USB drive is formatted, you can create a bootable USB drive using the Terminal application. Here are the steps to follow:

1. Open Terminal. You can find this in the Utilities folder within your Applications folder.
2. Type the following command in Terminal and press Enter: sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolumeNote: Replace "Mojave" with the name of the macOS version you downloaded, and replace "MyVolume" with the name of the USB drive you formatted.
3. Enter your administrator password when prompted.
4. Terminal will display a warning message asking if you want to continue. Type "Y" and press Enter.
5. Wait for the process to complete. This may take several minutes, depending on the size of the macOS installer and the speed of your USB drive.

Step 4: Boot from the USB drive

Now that you have created a bootable USB drive, you can use it to install or upgrade macOS, or perform maintenance tasks like disk repair or disk formatting. To do this, you will need to boot your computer from the USB drive.

1. Insert the USB drive into your computer.
2. Restart your computer and hold down the Option key.
3. When the Startup Manager appears, select the USB drive and press Enter.
4. The macOS installer or recovery environment will now start, and you can choose to either install macOS or perform maintenance tasks.

Conclusion

Creating a bootable USB drive for macOS is a simple and convenient way to install or upgrade macOS, or perform maintenance tasks like disk repair or disk formatting. With the help of Terminal, you can easily create a bootable USB drive and get started with macOS in no time.