Create a MacOS Catalina USB Bootable Install Drive

How to create a MacOS Catalina USB Bootable Install Drive.

You will need the following to be able to create a bootable installer drive for macOS Catalina:

• USB flash drive (16GB or larger) – this will be formatted to become the bootable install drive for macOS Catalina.
• The full “Install macOS 10.15 app” installer application download form Mac Store.
• A Mac that is connected to the internet, this is necessary to download the installer
• Devices compatible here: https://support.apple.com/en-us/HT210222

How to create a MacOS Catalina USB Bootable Install Drive.

• Download Install macOS 10.15 app form Mac Store. Link (>8Gb)
• Erase USB with Name = USB, Format = Mac OS Extended (Journaled), Scheme = GUID Partition Map
• Open Terminal and run command:

sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/USB --nointeraction && say Catalina Drive Created 

Note: /Volumes/USB = USB Name

• Enter your password and wait for the notification to complete.

Done!