Method and computer storage media for efficiently deploying an operating system are provided. A virtual hard drive file is received by a computing device. Upon receipt of the virtual hard drive file, the computing device is enhanced to expose and mount the virtual hard drive as a drive and boot option for the computing device. Thereafter, an initial boot sequence may be commenced utilizing the virtual hard drive file as the boot source. In some embodiments, a boot manager enhancer and a translator are utilized to do one or more of expose, mount and translate the virtual hard drive file. In some embodiments, a virtual SCSI miniport driver is utilized to do one or more of expose, mount, and translate the virtual hard drive file.