VirtualBox Files

VirtualBox文件存放在%HOMEDRIVE%%HOMEPATH%下的VirtualBox VMs目录，比如：C:\Users\ptian\VirtualBox VMs\MyLinux，MyLinux为我新建的虚拟机名称。

MyLinux.vbox为VirtualBox的配置文件，XML格式；

MyLinux.vdi为VirtualBox ‘virtual disk image’文件。

Many Operating systems are available as VDI files, these files are like a Virtual Hard Disk that contain all the data of the system. They can be opened by VirtualBox.

VMware 和 VirtualBox的主要区别

The main difference between VMware and VirtualBox is that VMware captures a whole virtual machine in an image, whereas VirtualBox only supports images of a hard disk. So in VirtualBox\'s world, you first need to create a new virtual machine, before using an existing VirtualBox image.