Similarly, you can create a bootable USB disk of other operating systems using UNetbootin. macOS Big Sur is currently the latest version of macOS, here are the steps to create a bootable USB installer for it.
In comparison, USB drives are conveniently accessible and less sensitive than CDs/DVDs. The Windows USB/DVD Download Tool is an official, freeware tool from Microsoft that allows you to install Windows 7 and Windows 8 and Windows 10 without having to first run an existing operating system on your computer.
So if you are using Linux distributions, RUFUS is not the way to go. Like other applications that enable creating installer USBs, you can create a bootable (installation) USB from an ISO disc image or a DVD.
