Using Fiery Installer Builder, you can prepare a USB flash driver as a bootable device and then load the system software files to the USB flash drive. The approximate time required to prepare the USB flash drive is 25 to 30 minutes. Using the prepared USB flash drive, you can install the system software to an existing HDD on the E-25C.
Due to the file system restriction, the maximum size of the USB flash drives you can use is 32GB. The minimum size required is 16GB.