from a german IT magazine I got this: https://www.heise.de/select/ct/2016/03/1454233793502849#titel_1454233793502849_10
openssl enc -aes-256-ctr -pass pass: "$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt < /dev/zero > /dev/sdX I've never tested it, so I don't know if it works ! For non-german's the article sense in short: - dd if=/dev/urandom of=/dev/sdX would need several days for 3 TB disk - the bottle leck is /dev/urandom cause it generates 15 MB/s only - to overwrite a disk there is no need to do it with a high value random number [*] - with the above command overwriting a 3 TB disk needs 5 h only [*] the main tasks in this article is to prepare (by overwriting) a disk for encryption P.S. in a previous contribution (Saturday, 26 January 8:52 p.m.) it should read "(time: 500 GB *76* min)" I looked at the wrong disk (my 320 GB disk needs more time: 112 min) ! _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
