<div dir="ltr">After rebooting I succeeded to created a luks usb drive as well as a luks container. Case closed! <div class="gmail_quote">2008/9/2 Philippe A. <<a href="mailto:futhark77@gmail.com">futhark77@gmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div dir="ltr">My attempts to open a luks container fail with the following messages: sudo cryptsetup luksOpen /dev/loop2 test.crypted Enter LUKS passphrase for /dev/loop2: key slot 0 unlocked. Command failed: Invalid offset As a result, the mapper never gets created in /dev/mapper. The commands I am using to create my container are the following: dd if=/dev/urandom of=test.crypted bs=1M count=256 sudo losetup -d /dev/loop2 sudo losetup /dev/loop2 /phil/test.crypted sudo cryptsetup -c twofish -s 256 luksFormat /dev/loop2 The resulting container appears to be valid as shown by cryptsetup luksDump: LUKS header information for /dev/loop2 Version: 1 Cipher name: twofish Cipher mode: cbc-plain Hash spec: sha1 [snip] However, no mapper after the luksOpen. I have a non-luks 'vanilla' container that works. Can anyone help me figure what I'm missing? Thanks!</div> </blockquote></div> </div>