Allocate 1.5GB for installing the WinPE boot environment, and the remaining space to save a master image file. The created master image is compressed, requiring about 70% of the backup source volume. For instance, with 30GB used space on C: drive, the backup image size is around 21GB. However, depending on the environment, the master image file may not compress as small as expected. Therefore, a USB memory with 32GB or more available space is needed.
– ActiveImage Deploy USB