Iinterweb instructions are often overly complex, using all kinds of “image burning” applications.

You need nothing special.

If the image is bootable, it will show as such:

$ file image.iso
image.iso: ISO 9660 CD-ROM filesystem data (DOS/MBR boot sector) 'FOOBAR_1.0' (bootable)

Writing image to USB media#

Always check and confirm your target device with lsblk.

Umount old fs before doing anything.

Writes directly to block device

cat image.iso >/dev/sdb

Possibility to specify more efficient block size and get some progress info

dd if=image.iso of=/dev/sdb bs=1M status=progress

Even more options, verification, progress, all the things

ddrescue image.iso /dev/sdb --force

Writing bootable ISO images to USB media