Was going to suggest the same software.I suggest Daric boot and Nuke Link- DBAN Download | Darik's Boot And Nuke as you can custom no. of writes.
You can start with less no of writes then see if the time is up to your mark. If not go for lees writes so as to take breaks if you prefer but its good.I hope it's fast. Read about people having to do 16GB for hours and hours with some software. It'd be a nightmare if that's what i have to do too, yikes!
@abhinav & SyGeek
I hope it's fast. Read about people having to do 16GB for hours and hours with some software. It'd be a nightmare if that's what i have to do too, yikes!
And thanks all three, yeh gracefully