isnt the ISO "format" just a disk image, same for .img, when you run `dd if=file(.iso|.img) of=/dev/sda` you're just copying the bytes from one file to the othe

isnt the ISO "format" just a disk image, same for .img, when you run `dd if=file(.iso|.img) of=/dev/sda` you're just copying the bytes from one file to the other, so what really defines the .img or .iso "formats" other than the file extensions?