Question: how to transfer save data from ps4 to flash drive?
Answer: Step 1: Turn on TV and PS4. ...  Step 2: Insert External Drive. ...  Step 3: In the Main Menu, Go to "Settings" ...  Step 4: Click on "Application Saved Data Management" ...  Step 5: Select "Saved Data in System Storage" ...  Step 6: Select "Copy to USB Storage Device" ...  Step 7: Select Game to Copy. ...  Step 8: Wait Until Transfer Is Complete.