That's unfortunately not going to work for us. I'm using the 4.0 pre release because of it's support for larger ISO boot images. I was looking at the code and saw a mention of the real_mode_seg starting at 4000h. Peter Vreman mentioned in his post this...

"When I change the real mode segments to 5000h-6000h-7000h then I can also use the localboot."

I'd like to know if that means I need to modify the code and if so, what variables need to be set. Unfortunately, in the 4.0 code for syslinux, the value of real_mode_seg is assigned by the linker. I have no idea how to modify that. I'm wondering if I need to be asking this question on another list like boot-land.net.

Glenn Bailey wrote: 
I had to downgrade to syslinux-3.52 in order to get the local boot option to work. 

From: cobbler-bounces@lists.fedorahosted.org [mailto:cobbler-bounces@lists.fedorahosted.org] On Behalf Of Steven L. Seed
Sent: Sunday, April 18, 2010 10:45 PM
To: cobbler@lists.fedorahosted.org
Subject: Re: Updated menu.c32

I'm experiencing this same problem with menu.c32 and localboot. In your posting, you mention changing the real mode segments. I'm not familiar with this. Can you explain?

Updated menu.c32
Vreman, Peter - Acision peter.vreman atacision.com 
Tue Mar 3 15:39:55 UTC 2009
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________________________________________
  
I've had this problem in the past, on RHEL4.2 systems.  Updating to the
syslinux provided by at least 4.4 I think was the solution in my case.
Peter, when you file your bug, could you also be sure to include the OS
version and the previous syslinux version (if you remember it)?
    

The bug I'm having is not menu.c32 related as I thought. The problem is that only localboot is not working. All other network-boot entries are working.

It is a generic HP Proliant-pxelinux problem, see also http://www.gossamer-threads.com/lists/syslinux/users/8742.

I have tested with the latest syslinux pxelinux.0. When I change the real mode segments to 5000h-6000h-7000h then I can can also use the localboot.

Regards,
Peter


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