Once you have those two things, the process shouldn’t take much longer. There are two main things you will need to create your bootable macOS installation disk : a USB stick, as well as the installation files.
What you need to create a bootable USB for Mac
If you want to run macOS on an external drive such as an external hard drive, it is slightly different, so we recommend reading the article on how to install macOS on an external hard drive.
This method is much easier than Terminal app, where you should type different commands to complete the task. You should wait a couple of minutes to get it done.
Go to the product page ( /dmg-editor.html) and download the setup file on your Mac.bin, etc… If you already downloaded macOS DMG file, then this app is best option to create a bootable USB installer for macOS and OS X.
UUByte DMG Editor is a cross-platform desktop app for creating bootable USB installer from various disk image files, including.
If you want to know how to do a boot install of macOS Catalina, macOS Mojave or an earlier version of Mac OS X or macOS, you have come to the right place. Many users choose this alternative of having a bootable disk or emergency bootable if it turns out that your Mac has startup problems and you cannot connect to the Internet or access the recovery mode. In this article we are going to show you step by step how to create a bootable USB, Mac operating system installer, either to install the latest version of macOS on multiple Macs install the latest beta version of macOS, perform a clean install, or repair a disk. Create a macOS installation disc with createinstallmedia and install macOS on multiple Mac computers, perform a cleaan install, or access a failed Mac that won’t start.