Create Bootable MacOS Catalina Installer Drive

Create Bootable MacOS Catalina Installer Drive

Check tutorial of How to Create a Bootable MacOS Catalina Installer Drive

So after a lot of requests from our users here is a guide about How to Create a Bootable MacOS Catalina Installer Drive.

Some Mac users may want to create a bootable MacOS Catalina installation drive, usually using a USB flash drive or some other similar small boot drive.

Bootable USB installers provide an easy way to upgrade multiple Macs to macOS Catalina, perform clean installs of MacOS Catalina, perform maintenance from a boot drive such as formatting drives, changing drive partitions, and performing restorations , and much more.

We walk through it how to create a boot USB install drive for macOS Catalina 10.15.

Prerequisites for creating a bootable macOS Catalina USB installation drive

The following prerequisites are required to create a bootable installer for macOS Catalina:

  • USB stick (16GB or larger) – this will be the boot installation driver for MacOS Catalina, it will be formatted to erase all data on this drive to become the boot installer
  • A complete “Install macOS Catalina.app” installation application located in the / Applications / folder on the Mac (you can download full macOS installers from Terminal with these instructions on newer macOS releases, otherwise use the macOS Catalina download link at App Store)
  • A Mac that is compatible with MacOS Catalina
  • Knowledge and understanding of the command line and Terminal

The Mac must also be online so that it can download the macOS Catalina installer, if not already done.

How to Create a bootable macOS Catalina 10.15 Beta USB installation drive

This process requires the use of the command line, if you are not comfortable using the terminal it is better to avoid this process. Syntax errors can lead to permanent data loss or erasing and formatting the wrong drive, so proceed at your own risk.

  1. If you haven’t already done so, connect the USB flash drive to the Mac, name the drive “UNTITLED”
  2. Open the “Terminal” application, it is located in the Utilities folder and you can also start it by pressing Command + Spacebar, typing Terminal and pressing Return
  3. Enter the following command at the Terminal command prompt, assuming “UNTITLED” is the name of the USB stick you want to create in the Mac Catalina installer boot disk:
  4. sudo / Applications / Install macOS Catalina.app/Contents/Resources/createinstallmedia –volume / Volumes / UNTITLED

  5. If the syntax is correct, hit the Enter / Return key and authenticate with the admin password as required by sudo
  6. Let the creation process build and complete the boot installation disk, it may take a while

After the macOS Catalina 10.15 USB boot installation drive is created, it will be mounted on the Mac. At this point, it can be used like any other boot disk or installation disk.

The macOS Catalina boot disk can be used with any macOS Catalina compatible Mac.

* If you see the error message ‘command not found’ in the terminal, it is probably because a typo or syntax error occurred, or because the application file ‘Install macOS Catalina.app’ was not found in the / Applications / folder where it is expected.

How to Boot with macOS Catalina USB Install Drive

To boot from the MacOS Catalina startup disk, connect it to a Mac, restart the computer and hold the OPTION key to boot into the boot menu, where you can select the MacOS Catalina installer as the boot option can choose.

  1. Connect the macOS Catalina installation disc to the target Mac
  2. Restart the Mac as usual
  3. Hold down the OPTION key during system startup and continue holding down Option until you see the Mac boot menu
  4. Choose the macOS Catalina install volume to boot from

With the MacOS Catalina boot disk, you can install MacOS Catalina as an upgrade and, if desired, also perform clean installations of macOS Catalina. You can also access the normal bootable installers, including Disk Utility for formatting and partitioning drives, and Time Machine recovery tools for restoring backups.

Did you manage to create a bootable installation drive for MacOS Catalina? Did you use a different method? Whatever your experience, let us know in the comments.

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How to Create a Bootable MacOS Catalina Installer Drive: FAQ

Tutorial Summary: How to Create a Bootable MacOS Catalina Installer Drive

In this guide, we told you about How to Create a Bootable MacOS Catalina Installer Drive; please read all steps so that you understand How to Create a Bootable MacOS Catalina Installer Drive in case if you need any assistance from us, then contact us.

How this tutorial helping you?

So in this guide, we discuss the How to Create a Bootable MacOS Catalina Installer Drive, which undoubtedly helps you.

What is actual time in which this method complete?

The time to complete the How to Create a Bootable MacOS Catalina Installer Drive tutorial is 10+ minutes.

What are the supported Device?

Apple

What are the supported Operating system?

mac OS


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