I manage to solve it, with a not so elegant solution
I any one has an "authorized" solution please let me know

in my local .conf I have

INHERIT += "rootfsdebugfiles"


ROOTFS_DEBUG_FILES += "\
${TOPDIR}/[path to file]/sektionnumber.dat ${ISODIR}/sektionnumber.dat; \
${TOPDIR}/[path to file]/sektionnumber.dat ${HDDDIR}/sektionnumber.dat; \
"

-Lars

On 2016-10-26 15:22, Lars Larsen wrote:
> Hello yocto world
>
> I have a recipe that produce an ISO image and a hddimg image.
> I need to add a file to the boot media root, alongside rootfs.img and 
> intrd  - so it is NOT a part of the rootfs
>
>
> inspired by bootimg.bbclass, I tried to add the following recipe to my 
> build
>
>
> /DESCRIPTION = "Provide a sektionnumber.dat file on bootmedia (ISO and 
> hdd)"//
> //
> //LICENSE = "CLOSED"//
> //BRANCH ?= "develop"//
> //SRC_URI ="file://sektionnumber.dat;"//
> //FILESEXTRAPATHS_prepend := "${THISDIR}/files:" //
> //
> //
> //do_bootimg_prepend(){//
> //    install -d ${ISODIR}//
> //    install -m 0644 "${THISDIR}/files/sektionnumber.dat 
> ${ISODIR}/sektionnumber.dat//
> //      install -d ${HDDDIR}//
> //   install -m 0644 "${THISDIR}/files/sektionnumber.dat 
> ${HDDDIR}/sektionnumber.dat//
> //}
>
> /but it is not recognized
>
> any suggestions ?
> BR Lars
>
>
> -- 
>
> Best Regards
> Lars Larsen
>
> F.Poulsen Engineering Aps
> Tjørnager 16
> 4330 Hvalsø
> Denmark
> +45 29802784
> www.visionweeding.com
>
>
>

-- 

Best Regards
Lars Larsen

F.Poulsen Engineering Aps
Tjørnager 16
4330 Hvalsø
Denmark
+45 29802784
www.visionweeding.com