[syslinux] Intel DX79TO localboot problem with CentOS

Gene Cumm gene.cumm at gmail.com
Tue Aug 6 03:24:58 PDT 2013

On Mon, Aug 5, 2013 at 9:04 AM, Jonas Keidel <jonas at jonas-keidel.de> wrote:
> 2013/8/5 H. Peter Anvin <hpa at zytor.com>
>> On 08/05/2013 05:37 AM, Jonas Keidel wrote:
>> > I have problems with the current syslinux (6.02-pre16) booting CentOS 6.4
>> > 64bit via LOCALBOOT 0 with the Intel DX79TO.
>> Did it work in previous versions?
> As i have written, in every previous syslinux version it didn't work.

Could you be specific on what versions you've tried?  3.86, 4.07 and
4.02 would be the first suggest.

>> > Also in every previous version there is problem exiting the pxe-stack. It
>> > boots again from bios.
>> What do you mean with "exiting the PXE stack" in this context?
> So i mean looking for the next boot device in the bios boot order. The
> screen output says:
> Boot from local hdd ...
> Exiting PXE.
> And then it reboots.

I think I had that issue with a first-generation uEFI-based system
(Dell Latitude E6410) that did this on me.

On Tue, Aug 6, 2013 at 2:17 AM, Jonas Keidel <jonas at jonas-keidel.de> wrote:
> so further information towards the chain.c32 problem:
> we can't boot from a software raid with this, because if the first hdd is
> swapped (and empty), the system normally can boot from the secondary hdd.
> But with chain.c32 that isn't possible.
> So we need localboot working.

How would your BIOS handle this if PXE were not involved?  Are you
using the driver-based RAID feature of your onboard SATA controller?
I believe for pre-OS environments, the drives will act like one.  For
chain.c32, that'd be hd0.


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