On Wed, Jan 08, 2020 at 01:45:28PM -0500, Michael Stone wrote:
On Wed, Jan 08, 2020 at 11:41:00AM -0700, ghe wrote:
> On 1/8/20 10:44 AM, Felix Miata wrote
>
> > If you're seriously concerned the next owner might try that, create a new file
> > full of junk from /dev/random or from /dev/null that fills the existing freespace,
> > then remove it.
>
> This is not at all a major job. Just get dd copying from /dev/random to
> /dev/<diskDrive> before you go to bed tonight. Things will be all better
> in the morning.
/dev/random is unnecessarily slow and /dev/null will do nothing. the correct
device is /dev/zero
/dev/urandom might be acceptable if you're paranoid enough.