I had a question about the image boot on a device. When you use the linux dd command, what you do is transfer the image exactly to the device. Naturally, before booting the image, I created a file system (default fat32, for greater compatibility) to the device, but now after using the command dd, the file system appears as "unknown". The iso works fine, but I would not know it's that stranger. When I use some programs to boot, for example rufus, the format of the file system is maintained. This is why it happens? Should I leave a caveze or something to keep the format?