I switched from warrior to dunfell and want to build an image for Oracles VirtualBox VM.
On warrior there was 'automatically' a hddimg generated on dunfell this is no longer the case. The IMAGE_FSTYPES has to by specified, I use:
WKS_FILE = "virtualbox.wks"
IMAGE_FSTYPES += "wic.vmdk"

This requires me to write an wks file for which I use:
part /boot --source bootimg-pcbios --ondisk sda --label boot --active --align 1024
part / --source rootfs --ondisk sda --fstype=ext4 --label platform --align 1024
bootloader --ptable gpt  --timeout=5  --append="rootfstype=ext4 video=vesafb vga=current console=tty0"

With these settings I get an vmdk image but it fails to boot. I get a "VFS Unable to mount root fs on unknown block(0,0)" dump.

Any ideas?