There are two ways to create a macOS bootable USB. One is using the macOS installation app provided by Apple, where you can download it from Mac App Store. This is the ideal solution when you have a working Mac at hand.
The other ways is using a dmg file. This is the only way when you just have a PC and need to make a macOS bootable USB. This is the recommended way when your Mac was unable to boot or at the time to build a hackintosh.
Table of Content:
- What is DMG File?
- Why You Should Upgrade to macOS Sonoma
- Free Download Links for macOS Sonoma
- Bonus: How to Create a Mac Sonoma Bootable USB on Windows PC
First, What is macOS DMG File?
Simply put, a macOS installation .dmg file is a disk image file used by Apple's macOS operating system. Think of a .dmg file as a virtual CD or DVD; when you “open” or “mount” it, it behaves much like inserting a physical disc into your computer.