Downloaded the free version wich is probably as good as the Pro as far as accomplishing the goal. But turned out never needed to use it so can't vouch.
Any thing intended to entirely sanitize a HDD regardless the size is probably going to take a while as it would take up to 8 passes to to guarantee non-recoverability.
I would like to know if you have used a program that can delete all the files permanently from the hard disk, but it has to run from a floppy or run from a dos prompt.
I need this because I used many times other people PC's, so I can't install programs that write the registry every time on every PC.
I already tried sdelete from sysinternals and restoration, but the first one doesn't delete all the files and the second is very slow.
TIA for your advice.