How to Convert a KVM to a VDI

KVM is a bare metal virtualization software use to run several operating system on the same hardware. VDI is the file type used in VirtualBox, Sun Microsystems’ desktop virtualization product. A desktop virtualization product allows you to run an operating system in a window independent from your main operating system. VirtualBox and KVM use different file formats to store the virtual machine and transferring a KVM virtual machine to VirtualBox requires an indirect approach.

Via How to Convert a KVM to a VDI | eHow.com.