On 2019-01-28 at 10:12:28 Patrick O'Callaghan wrote:
Another point: several people have mentioned using /dev/urandom.
important to note that this is a *pseudo-random* generator. It starts
from a random seed, but from that generates a completely deterministic
pattern. If you have the seed, you have everything. And since the idea
here is to overwrite the disk, the first part of which contains
"plaintext" that follows a regular layout (partition table etc.) it
makes the task of decoding the disk even easier as that's the only part
you would actually have to analyse at a physical level.
But it is just a little more random than all zeroes.
Erik P. Olsen