One way to ensure that data on a hard disk or device is completely erased is to use a tool like Soft191 Disk Free Space Wiper.
With Soft191 Disk Free Space Wiper you have, on the one hand, a security tool that erases you (overwriting up to 10 times if necessary) any hard disk, and, on the other hand, you get more free space and available on any of these units of storage.
It allows you to erase hard drives, USB drives, RAM devices, etc. Soft191 Disk Free Space Wiper remains discreetly located on the Windows taskbar for you to use whenever you deem it necessary.
You can free download Soft191 Disk Free Space Wiper 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.