Why don't you follow what explained here: https://www.debian.org/releases/stable/amd64/ch04s03.html.en
It's a simple two command procedure: # cp debian.iso /dev/sdX # sync As specified, this should work fine for most users. The other options are more complex, mainly for people with specialised needs. Please notice that the image must be written to the whole-disk device and not a partition, e.g. /dev/sdb and not /dev/sdb1. This is also pointed out in the liked web page.
