geteltorito seems to be out-of-date on SL systems. Last version seems to be 0.5
The updated script can be found at http://www.uni-koblenz.de/~krienke/ftp/noarch/geteltorito/geteltorito see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=611784 geteltorito is also out-of-date on systems 2.6.32-431.20.3.el6.x86_64 : Linux localhost 2.6.32-431.20.3.el6.x86_64 #1 SMP Thu Jun 19 14:01:59 CDT 2014 x86_64 x86_64 x86_64 GNU/Linux geteltorito -v Version: 0.4 Linux asus-x75vc__charles.alphanet 3.15.1-1.el6.elrepo.x86_64 #1 SMP Tue Jun 17 16:35:45 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux geteltorito -v Version: 0.4 3.10.33-rt32.34.el6rt.x86_64 : Linux localhost.localdomain 3.10.33-rt32.34.el6rt.x86_64 #1 SMP PREEMPT RT Wed May 28 09:57:12 CEST 2014 x86_64 x86_64 x86_64 GNU/Linux geteltorito -v Version: 0.4
