When I use the web on a windows os I have one utility that deletes history, cookies, temp files and so forth, then another utility that overwrites all unused space on the hard disc. This guarantees as much privacy as possible.
In Mint, Firefox already has tools to delete history, cookies, etc. I'd like to use secure-delete to overwrite the unused disc space.
Is there a front end for secure-delete?
Can someone share the command line entries I'd use in terminal to overwrite all unused hard drive space safely, not removing any data?
I found one article on using secure-delete in Linux, but I'm uncertain about the mounting point.
Thanks in advance,