OT: Can Reformatting A Hard Drive To ext3 Destroy All the Data On It?

[Alan Cox]

> /dev/zero is not the right device to use.
> Better is /dev/random or /dev/urandom
> But they are not speed

It makes no real difference - use the drives own secure erase feature if
you want to be sure, otherwise you've got no guarantee that everything
will be cleared - only the drive knows enough to do the job.