If i may introduce a function of my script tools..
st iso usb
Thats what i use without problems since F15, about 10 times mothly at least.
Searches user selected $HOME, $XDG_DOWNLOADS_DIR, /home, or a manualy entred PATH recursivly for any iso or img file.
It then asks which iso file you want to write onto usb.
It waits for you to plug in a usbdrive, usbkey, pendrive, or whatever, and writes it on it.
If there are more removable usb media, it asks which one to use..
ATTENTION: Make sure the proper drive is select, the script asks you !
Reboot and select usb as boot device, et voila
NOTE:
To install i'd suggest the repo way:
http://sea.hostingsociety.com/?p=Scr...c=Installation
EDIT:
Removed old screenshot and added a new one.
Added: attention text
Added: screenshot if no or multi usb-devices are connected..