Tools to create a bootable USB stick from a bootable CD [duplicate]

"Is there any tool to create a bootable USB stick from any bootable CD? Like I want to create a USB stick from Ultimate Boot CD.

Yes, and it is included in Ultimate Boot CD.

Quote:

New! Run Ultimate Boot CD from your
USB memory stick


A script on the CD prepares your USB memory stick so that it can be
used on newer machines that supports
booting from USB devices. You can
access the same tools as you would
from the CD version."

UNetbootin would do the trick with pretty much any live CD.