On 5 Apr 2016 21:25 -0700, from dpchrist@xxxxxxxxxxxxxxxx (David Christensen): > # grep sda2 /etc/crypttab > sda2_crypt /dev/sda2 /dev/urandom > cipher=aes-xts-plain64,size=256,swap Since you don't have the "luks" option, Debian does not treat this as a LUKS device. So when cryptsetup claims that /dev/sda2 "is not a valid LUKS device" it is quite correct. -- Michael Kjörling • https://michael.kjorling.se • michael@xxxxxxxxxxx “People who think they know everything really annoy those of us who know we don’t.” (Bjarne Stroustrup) _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt