It’s possible to simply disable USB ports support in PC in order to prevent from using USB removable flash drive or mass storage device (portable hard disk drive) to copy and transfer data and files. However, disabling USB ports totally also shutdown the ability for system to use USB based keyboard, mouse, webcam, printer, scanner and etc, which has become a common connectivity norm in modern computer.
As a workaround, use the following registry hack to stop USB Mass Storage Device drivers from starting when the system boots up.
- Goto Run type regedit then press enter.
- Navigate to the following registry key:
HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet -> Services -> UsbStor
- In the right pane, double click on the Start value name.
- Change the value data to 4 to disable the removable USB mass storage device drive access.
- To revert and re-enable the drive access for removable USB mass storage device driver, change back the value data for Start to its original default of 3.
The change will take effect immediately to block any USB mass storage device such as USB flash drive, USB key and portable harddisk .
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