very compact virtual drive software, although the small sparrow may be small but fully-equipped, the software can not only create a virtual CD-ROM files, but also super-fast, not to try. This is the best I have seen the virtual drive software, virtual disc 650m <4 minutes, and has plug-and-play features. When the software does not usually do not have the slightest occupied system resources, and only when the occupation of the use of system resources. It is green software.