The title is pretty much describe it all.
I thought it would be an extremely easy task but I'm googling the topic for a few days and can not find a proper solution.
I succeed convert it to .iso but it's not BOOTABLE from physical machine.
I have tried :
VBoxManage clonehd file.vdi output.iso --format RAW
I have tried :
VBoxManage clonemedium --format RAW gangina.vdi gangina.img
I have tried :
qemu-img convert -f vpc -O raw gangina.vhd gangina.raw
I have also tried to mount the bootable vdi file and :
sudo dd if={mountedDirectory} of=gangina.iso status=progress
unfortunately none of them is actually bootable from physical machine.
I'm sad :(