DBAN still does the trick. I use it on all my hard disks, thumb drives and memory cards.
Give DBAN a try. This tool never fails me for any kind of disk I throw at it.
zfs set dedup=on tank
there... that should do the trick.
I just wasted half an hour of class time playing Megaman 2 >_>
You are welcome.
... I think it's fair to say that, for all the miscues that eventually led to its demise, the company created many products and technologies of value along the way, enough so that Oracle thought it was worth it to acquire them and try to keep them going.
However, I think that it's equally fair to conclude that, after years of running losses, including about $2 billion in fiscal 2009, so that a buyout was necessary to avoid looming bankruptcy, Sun's executives did nothing to deserve lavish rewards, by any conceivable meaning of the word "deserve". But what actually happened is by now a familiar story.
The wages of sin are high but you get your money's worth.