Network install on pcengines board

I am trying to do a network install on a pcengines board.

These boards support ipxe, so there is no need to setup a dhcp/tfpt server. Just an ipxe script and a http server to serve the images.

the ipxe commands I use to boot are these:

set base-url
set version  19.07.7
kernel ${base-url}/openwrt-${version}-x86-64-vmlinuz console=ttyS0,115200 root=/dev/ram0 rw
initrd ${base-url}/openwrt-${version}-x86-64-rootfs-ext4.img

The kernel boots but then panics.

Looking at the output I noticed the following:

[    0.958644] Unpacking initramfs...
[    0.962112] Initramfs unpacking failed: junk in compressed archive
[    1.179567] Freeing initrd memory: 262144K

So it looks like my intitrd image is not good. But where do I get a good image?

Where did you get the image you use ?

Since does not list an initramfs image, I assume you have to build it yourself.

I used x86_64 combined-ext4.img to my APU1 board. This image will allocate 256M of you disk. You can resize the partion so it fits your disk.

Did you do this over the network, or using an USB stick?

I am using
The geode is used on the older Alix board. The APU boards are full 64 bit x86 processors...
But yes, no initramfs. I guess I will have to look in to making one myself.

The very first time I did it with USB, then I have done the upgrade via sysupgrade with a home made image.