![bootable usb iso burner bootable usb iso burner](https://linuxmint-installation-guide.readthedocs.io/en/latest/_images/mintstick.png)
Now you may be wondering why, if bootable ISOs are so poorly suited for that, most OS distributors out there provide ISO Images instead of DD Images. Thus, we have established that ISO images are actually poorly suited to create bootable USB media, because they are the equivalent of providing a round peg in order to fit a smaller square hole, and therefore, the round peg must be altered in order to fit. For the record, in Rufus terminology, a 1:1 copy of USB media is called a DD Image (you'll see that option in the list), and some distributions, like FreeBSD or Raspbian, actually provide DD Images for USB installation, alongside ISOs for CD/DVD installation. That's not to say that this kind of 1:1 copy cannot exist for USB, just that, 1:1 copies of USB media will be completely different from 1:1 copies of optical disc media and (outside of using ISOHybrid images, that are crafted to work as both 1:1 copies of disk and optical) are therefore not interchangeable. what CD/DVD burner applications do when writing an ISO). So, if you have an ISO, you cannot simply do with an USB what you can do for an optical disc, which is read every single byte from the ISO and copy it as is, in sequence, onto the disc (i.e. ISO is a 1:1 copy of an optical disc, and optical disc media are very different from USB media, both in terms of how their boot loaders should be structured, what file system they use, how they are partitioned (they aren't), and so on.
![bootable usb iso burner bootable usb iso burner](https://www.poweriso.com/tutorials/images/create-linux-bootable-usb-drive-1.png)
To start with, you have to understand that the ISO format was NEVER designed for USB boot. when the Advanced Options section is displayed), because they are intended for people who already known what they are about. First of all, a lot of the options you list are only be listed when running Rufus in advanced mode (i.e.