dd if=path/to/fedora.iso of=/dev/usb_device bs=512

WARNING: GPT (GUID Partition Table) detected on '/dev/xvdi'!
The util fdisk doesn't support GPT. Use GNU Parted.

Device     Boot      Start         End      Blocks   Id  System
/dev/xvdi1   *           0     2928639     1464320    0  Empty
/dev/xvdi2             172        8695        4262   ef  EFI (FAT-12/16/32)
/dev/xvdi3            8776       42919       17072    0  Empty

Warning: The driver descriptor says the physical block size is 2048 bytes,
but Linux says it is 512 bytes.
Ignore/Cancel?"