[syslinux] Changes to get CD to boot on EFI System.

[Michael D. Setzer II]

I've been the maintainer of the G4L project since 2004, and have had great 
success using syslinux, but yesterday I ran into a machine that would not 
boot from the CD. The system system was a Lenovo L540 notebook, and it 
seems to use EFI? Disabled the Secure EFI, but it still would not boot. 
Comes up with the syslinux menu and seems to load the kernel, but then it 
just stops. Never shows the message about finding the filesystem and 
loading the ram disk? Installed Fedora 23 on the machine from DVD, and 
that went fine, and it setup an EFI boot from grub. Tried loaded the g4l from 
the grub using the same method as non-EFI machine, but it seems to do the 
same thing. 

Is there a process to convert a non-EFI CD system into a system that 
supports EFI, or does one need to create two different setups. Not sure if this 
is something about this notebook, or if it is required by EFI systems. 

Have newer desktop systems from Lenovo, and they don't have this issue. 

Looked online for EFI info, and never found something that explained how to 
setup an image that would do non-EFI and EFI booting, so thought it would 
just be an process of turning off the EFI to make an image, but that doesn't 
seem to work? Is there documentation that explains how to do this, or is it still 
being worked out. 

Thanks.

+----------------------------------------------------------+
  Michael D. Setzer II -  Computer Science Instructor      
  Guam Community College  Computer Center                  
  mailto:mikes at kuentos.guam.net                            
  mailto:msetzerii at gmail.com
  Guam - Where America's Day Begins                        
  G4L Disk Imaging Project maintainer 
  http://sourceforge.net/projects/g4l/
+----------------------------------------------------------+

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