制作 USB 启动盘

https://www.howtogeek.com/howto/linux/create-a-bootable-ubuntu-usb-flash-drive-the-easy-way/

How to Create a Bootable USB Drive on Windows

There are many tools that can do this job for you, but we recommend a free program called Rufus—it’s faster and more reliable than many of the other tools you’ll see recommended, including UNetbootin.

How to Create a Bootable USB Drive on Ubuntu

If you’re already using Ubuntu, you don’t need to do this from Windows. Just open the Dash and search for the  “Startup Disk Creator” application, which is included with Ubuntu.

Provide a downloaded Ubuntu ISO file, connect a USB drive, and the tool will create a bootable Ubuntu USB drive for you.

Many other distributions have their own similar tools built-in, so you’ll have to check and see what your particular distribution has available.