Allegedly, on or about 26 January 2019, sixpack13 sent:
maybe "hdparm security erase" is an option (don't know
content is afterwards still recoverable)
Of course you could leave a drive filled with non-private files, just
to lead them down the garden path. ;-)
[tim@localhost ~]$ uname -rsvp
Linux 4.16.11-100.fc26.x86_64 #1 SMP Tue May 22 20:02:12 UTC 2018 x86_64
Boilerplate: All mail to my mailbox is automatically deleted.
There is no point trying to privately email me, I only get to see
the messages posted to the mailing list.