DiskMaker X 8 快速制作macOS系统U盘工具 8.0.3

DiskMaker X是一款免费的 macOS USB 启动盘制作软件, 最新版本支持macOS 10.14.x

http://diskmakerx.com/


另外Apple官方也有制作系统U盘的指南
https://www.applex.net/threads/67001/

DiskMaker X (was Lion DiskMaker) helps you to build a bootable drive from the official OS X installer app (the one you download from the Mac App Store). It detects the OS X Install program with Spotlight then proposes to build a bootable install disk and make it look as nice as possible. It’s the easiest way to build an OS X Installer in a few clicks! Then you can use the Install drive to fully re-install the OS on a freshly formated drive, or install it on your many Macs without re-downloading the full installer.