When you boot Linux-based Paragon environment, occurs (each time) scanning of hardware. At detected drives (internal and external) are searched partitions, and if they are - are mounted. I doubt that this procedure can be skipped.

Perhaps the process will take place more quickly in an WindowsPE environment.
More quicker deployment of images will happen if the drive (s) connected via USB 3.0 to a Windows PC on which running Paragon.