Virtual Box, Disk Images, and EFI

To use it with VirtualBox we need to convert it to the VDI format:

 VBoxManage convertdd sdb.raw sdb.vdi --format VDI

To use it with VMware we need to convert it to the VMDK format:

 VBoxManage convertdd sdb.raw sdb.vmdk --format VMDK

VBoxManage modifyvm "VM name" --firmware efi

To switch back to using the BIOS:

VBoxManage modifyvm "VM name" --firmware bios