Create a bootable USB drive for macOS X versions including El Capitan, Yosemite, Mavericks, Sierra, High Sierra, Mojave, Catalina and Big Sur. A step by step tutorial that shows how to create a bootable USB flash drive for OS X 10.11 El Capitan.Full guide: http://www.idownloadblog.com/2015/06/20/cre. Currently, you can only create a bootable installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El Capitan. If you want to go back to your previous macOS, here's how to downgrade macOS.
I have downloaded the El Capitan dmg file (InstallMacOSX.dmg) provided by Apple. The expanded dmg image contains the package 'InstallMacOSX.pkg' which should be run to create the El Capitan installer but fails with the following message 'This version of OS X 10.11 cannot be installed on this computer.' presumably because quite reasonably it would not make sense to install on top of a later version of the OS. However in this case I want to create a boot USB drive for an installation on another Mac.
Then follow these steps to create your bootable macOS Catalina drive. Connect your drive to your Mac. Launch Install Disk Creator. In the main window, you’ll see a pop-up menu under. Here i teach you how to make a bootable USB drive with OS X El Capitan and how to clean install the operating system on your computer. How to Create a Bootab.
Macos Catalina Usb
Create El Capitan Bootable Usb On Catalina
I am stuck in a chicken and egg situation where I need another machine running El Capitan or earlier to create and El Capitan boot installer.