VirtualBox: Resize vdmk drive

• Clone the vdmk image to vdi image
• Resize
• Clone back to vdmk

VBoxManage Commands

VBoxManage clonehd "source.vmdk" "cloned.vdi" --format vdi
VBoxManage modifyhd "cloned.vdi" --resize 51200
VBoxManage clonehd "cloned.vdi" "resized.vmdk" --format vmdk

The above will resize the hard disk up to 50GB (50 * 1024MB).

Usage

C:\Program Files\Oracle\VirtualBox>VBoxManage.exe clonehd "C:\a\v\vm\nodes.win7\
w7.devbox2018\W7.Admin.Free.1-disk1.vmdk" "w:\W7.Admin.Free.1-disk1.vdi" --forma
t vdi