说明：  VirtualBox-OSE-1.3.8,开源项目，比Vmware还快的虚拟机，丝毫不逊色于它。GNU GPL V2。可以迅速还原到莫个系统状态。可以在里面学习病毒技术，操作系统等。（文件其实是.tar.bz2的，gz重压费力又不太省空间）。
(VirtualBox- OSE- 1.3.8, PC, Vmware faster than the virtual machine, no way inferior to it. GNU GPL V2. Can be quickly reduced to a state of MO systems. In studying virus technology, operating systems, etc.. (In fact, yes. Tar.bz2, gz weight is not painless province space).)