[ipxe-devel] Error "Could not select: Exec format error (2e008081)" while loading EFI images via HTTP/TFTP

[Christian Nilsson]

On Mon, 9 Sep 2019 at 16:06, Felix Jacobi <felix.jacobi at iserv.eu> wrote:
>
> Hi Arne,
>
> Thank you for your reply.
>
> On 09.09.19 at 15:17, should be q931 wrote:
> > As per your screenshot, the error code given is in a URL
> >
> > The error provides a URL http://ipxe.org/err/2e008081
>
> Yeah, I am aware of the error page and checked the list from the
> additional notes. That's the reason I wrote that the Linux kernel is
> compiled with the CONFIG_EFI_STUB option.
>
> I am also definitely sure that the kernel image isn't corrupted in some
> way as it works seamlessly with other hardware in UEFI mode. The same
> applies for the iPXE binary itself which works on other hardware, too.
>
> > If a BIOS iPXE is able to be chainloaded, then it would indicate that it
> > is BIOS mode rather than UEFI mode, and this may be why it will not
> > chain load a UEFI iPXE
>
> The notebook has definitely no BIOS legacy mode, it just boots in UEFI
> mode. The iPXE EFI binary itself is loaded correctly by the firmware via
> HTTP with the URL supplied by DHCP. Chainloading further iPXE scripts
> works correctly, but iPXE is unable to load subsequent EFI binaries.
>
> Regards, Felix
>
> --
> Best regards,
>
> Felix Jacobi
>
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Hi,
use imgstat before boot
verify that it says that it is an EFI image.
Also verify that the filesize is correct.
And that you have the correct url (that install is the actual image)

And yes, disable secure boot, unless you have both ipxe, and the
kernel signed by a certificate that has been added inside firmware
config.
You can follow the link to see each place in the sourcecode where this
error can come from. (also, always include the link that are shown
together with the error message to get help easier)

in your last image you can see that your imagefetch is not able to
detect the fileformat.

My guess is that your server returns something other than what you
expect it to - maybe because it is ipxe, and not a browser, and your
server detects this. or something similar which "corrupts" the data.

/Christian