[CentOS] kickstart ks.cfg file on USB devices

Is there an easy way to specify the proper device location for
the kickstart configuration file if it is on a USB flash or USB
floppy drive?  Depending on the hard disk configuration they
might by /dev/sda, /dev/sdb, etc.

On SuSE'autoyast instalattions, the system searches all available
devices for an ``info'' configuration file.  Does CentOS 5.x do
something similar to find a ``ks.cfg'' file?

Bill
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