[Turing_Machine]

Okay, so why not wipe to NIST standards (multiple random overwrites or whatever is the latest best practice) and then zero it out to an "unused" state afterward?

[ansible]

If all you're going to do is just securely delete data without drawing suspicion, that's a good plan.

If you wanted to hide data in an encrypted partition that looks like random data, that's not going to work.