H:\project>qemu-img convert -f raw lede-17.01.1-x86-generic-combined-ext4.img -O vdi lede.vdi

H:\project>C:\progra~1\oracle\Virtualbox\vboxmanage.exe clonemedium disk "lede.vdi" "lede2.vdi" -variant Standard
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Clone medium created in format 'VDI'. UUID: 7fbec107-d4a8-4dd6-a62f-8fcb61975fe0

H:\project>C:\progra~1\oracle\Virtualbox\vboxmanage.exe modifyhd lede2.vdi --resize 64
0%...
Progress state: VBOX_E_NOT_SUPPORTED
VBoxManage.exe: error: Resize medium operation for this format is not implemented yet!h