dracut-initqueue[265]: /dev/disk/by-label/Fedora-18-x86_64-Live-Desktop.is does not exist.

[Namikaze Minato]

Hello community.

Trying to boot "Fedora 18 Live Desktop" on an EFI machine HP
(Probook 4540s) regardless of SecureBoot status results in the
following warnings until starting the rescue shell:

dracut-initqueue[265]: Warning: Could not boot.
dracut-initqueue[265]: Warning:
/dev/disk/by-label/Fedora-18-x86_64-Live-Desktop.is does not exist.
dracut-initqueue[265]: Warning: /dev/mapper/live-rw does not exist.

There is no "Fedora-18-x86_64-Live-Desktop.is" label while in
the rescue shell, and there is no /dev/sdb either.

I tried to boot from an USB drive created using either liveusb-creator
or dd (as specified here:
http://docs.fedoraproject.org/en-US/Fedora/17/html/Installation_Guide/Making_USB_Media-UNIX_Linux.html)
or unetbootin.
What am I doing wrong? How can I boot Fedora 18?