Create CentOS Bootable USB Stick

As of CentOS 6.5 you can simply create a bootable USB from the ISO using dd.

# /dev/sdX is whatever disk your usb stick shows up as
# check dmesg, also, be sure to use just the dev name
# and not a partition like /dev/sdX1
dd if=/path/to/centos.iso of=/dev/sdX bs=4096