Using SData Tool V100 for either a USB drive or an SD card will result in permanent data loss.
Would you like help writing a formal feature request or user story for this? sdata tool v100 double usb or sd card space better
Firmware Manipulation: Tools like SData Tool often re-write the drive's controller information so a computer sees "64GB" or "100GB" instead of the original size. Using SData Tool V100 for either a USB
Recommendation: If you are flashing firmware for longer than 30 minutes, Dual USB is a fire hazard (metaphorically, and slightly literally). Stick to V100. and slightly literally). Stick to V100.