Plug it in and format it! failing this you can rub a magnet over it ... this is the answer if you dont wish to use it again. just plug the thing in and format....
Or you can use hard disk over writer ErAce for example
Use ErAce from erace.it
To completely erase the data on the hard drive.
Yes, Surely it will remove everything on hard drive. Formatting a hard drive means to remove everything on hard drive. If you are formatting only a specific drive like C:\ or D:\ then the data in only that drive will be removed.
To completely erase the information on your hard drive, you can try a third-party tool like iReaShare Data Wipe, which can completely erase your files, folders, hard drives, and external devices on a PC.
Use ErAce from erace.it
Reinstalling Windows will not erase the hard drive unless you tell it to reformat the hard drive before reinstalling the operating system. You will have to reinstall all your programs that were installed prior to reinstall but all your saved files will still be there.
It can erase your hard drive!They can delete your files.
You can use over write programm like ErAce form erace.it
The most conventional way is to get a giant magnet, and slide it across your hard drive atleast 7 times. WARNING: Only do this if you truly want to destroy/erase it.
Degausser
dd if=/dev/zero of=/dev/hdxSubstitute the appropriate drive letter for x. Be very careful that you do not erase the wrong hard drive.
usb hard drive caddy