SData Tool is widely considered "snake oil" software. While it appears to double your space in Windows Explorer, it does not physically increase the storage capacity of your hardware. Using it carries a high risk of permanent data loss and file corruption.
If you were to use this tool on a 16GB USB stick to "double" it to 32GB: SData Tool V1.0.0 -Double USB OR SD Card Space-
It sounds like you’re referring to a tool called SData Tool V1.0.0 that claims to double USB or SD card space. The Verdict Up Front: AVOID SData Tool is