Create Mac Os X Bootable Usb Installer From Dmg -

Creating a bootable USB installer for macOS from a DMG file is an essential skill for troubleshooting, performing clean installs, or upgrading multiple Macs. A USB installer allows you to install the operating system without relying on a stable internet connection for recovery mode, making it faster and more reliable.

Always use createinstallmedia when possible. Only use dd if you have a legacy bootable DMG (e.g., OS X Lion recovery disk). create mac os x bootable usb installer from dmg