Manual steps in Mac OS

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Mac Installer Package
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This process works for both creating bootable USB installer for macOS Catalina for Hackintosh and also for Mac. With those in mind, whoever would like to install macOS Catalina or other version on Mac or install macOS Catalina or other version on Windows, we’ve prepared complete instructions to create a bootable USB installer for macOS Catalina.

Rename the USB Flash Drive to Become the OS X El Capitan Bootable Installer: The next thing you’ll.
Nullsoft Scriptable Install System (NSIS) If you love open source software, you may want to check.

Before starting the manual USB creation process, you must download the .zip file that contains CloudReady. Start by downloading the CloudReady .zip file to your standard downloads folder, not the target USB device.

Current CloudReady Enterprise/Education Customers or Trialers: download the .zip file from my.neverware.com on the Downloads tab.
CloudReady Enterprise/Education New Trials: You can start a 3 week trial of the Education or Enterprise Editions of CloudReady, totally free, by signing up at try.neverware.com. After signing up, you'll be able to download the .zip file from my.neverware.com.
CloudReady Home Users: If you are an individual user and don't need support or management, download the .zip file for our free Home Edition here.

The following notes of this guide assume that:

You are using the Chrome browser.
You have already downloaded the image and it's in your Downloads folder using the steps above.

Note: Only if you are using an older version of Mac OSX, unzipping the CloudReady file you downloaded may not work as expected.
If you experience issues, try using the free Mac utility 'Unarchiver' to unzip the file.

Install and launch the Chromebook Recovery Utility

Download and add the Chromebook Recovery Utility extension to your Chrome browser.

Chromebook Recovery Utility Add to Chrome

You must have this extension installed to create a CloudReady installer.

1. Add Chrome Recovery Utility to Chrome: After clicking on the link above, you'll be brought to the following Chrome Web Store website;

Click 'Add to Chrome' in the top right-hand corner.

2. Confirm & Install: On the Add 'Chrome Recovery Utility' prompt:

Click 'Add app'

3. Launch: The Chromebook Recovery Utility will now be installed and will show up on the Apps Page of your Chrome browser.

Click on the Recovery icon highlighted below.

Note: This should popup automatically, if it doesn't, type chrome://apps in the address bar of your Chrome browser.

Create the USB Installer

Build Macos Installer For Your Application

Note: As a general rule of thumb it is recommended to ensure the USB you are using has been formatted before continuing with the steps mentioned below. To format your USB using the Google Chrome Recovery Utility follow the steps mentioned here.

1. Initial Screen: Once launched, you should see the below screen.

2. Locate the gray gear icon on the top right of the window.

3. Browse for Local Image: Click the gray gear icon and choose Use local image and locate the cloudreadyXXXX.bin.zip file in your Downloads folder.

4. Insert USB device: When prompted, insert your 8 GB or larger USB flash drive and choose the corresponding drive on the screen.
Note:
-During the process, it is normal for the utility to show unusual percentages.
-Proceeding with this step will erase the target flash drive. Proceed with caution.

5. Process Complete: When the process is completed, remove the USB flash drive from your computer.
Congratulations, your USB flash drive is now a CloudReady installer and is ready to use!

These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.

Download macOS

Find the appropriate download link in the upgrade instructions for each macOS version:

macOS Catalina, macOS Mojave, ormacOS High Sierra
Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.

OS X El Capitan
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.

Use the 'createinstallmedia' command in Terminal

Connect the USB flash drive or other volume that you're using for the bootable installer. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
Open Terminal, which is in the Utilities folder of your Applications folder.
Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace MyVolume in these commands with the name of your volume.
Catalina:*
Mojave:*

High Sierra:*
El Capitan:
Press Return after typing the command.
When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the bootable installer is created.
When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.

Mac Installer Package

* If your Mac is using macOS Sierra or earlier, include the --applicationpath argument, similar to the way this argument is used in the command for El Capitan.

Use the bootable installer

Hd 5870 for mac pro. After creating the bootable installer, follow these steps to use it:

Plug the bootable installer into a compatible Mac.
Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to macOS Recovery.
Learn about selecting a startup disk, including what to do if your Mac doesn't start up from it.
Choose your language, if prompted.
A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar.
Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.

Learn more

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