Under Linux, there are many ways to put a bootable image on a USB stick or SD card. On the command line, the tool of choice is dd, which stands for disk dump and reads and writes hard disks, partitions or files bit by bit below the file system level. If you use dd , you should be sure that you are using the right device, because once dd has been started, the target is mercilessly overwritten without confirmation.
In recent years, some graphical tools have become fashionable for creating bootable USB sticks. Some distributions offer their own tools, others are independent of the distribution or operating system. Rufus has been available for Windows for 10 years, the balenaEtcher, or Etcher for short, which is available for Linux, macOS, and Windows and is recommended to beginners under Linux, is more broadly based. Etcher can be operated both graphically and via CLI.
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