Joshua Murphy writes: > A) To fill the drive with zeros: > dd if=/dev/zero of=/dev/<drive>
Should be enough for practical purposes.
> B) And, to make it at least questionable whether you wiped it or
> merely had it encrypted:
> dd if=/dev/urandom of=/dev/<drive>
Similar method, but faster: badblocks -t random -w /dev/<drive>
You can interrupt this after the first pass when the reading & comparing
part starts.
Wonko
