You need to specify a device node for the encrypted partition, not the path where the device it is mounted; For the key file, add the full path. You are confusing devices in /dev with "normal" files and folders. Furthermore, you most probably need root permissions to write to a device directly:
sudo luksAddKey /dev/hdaX /path/to/keyfile example: sudo luksAddKey /dev/hda4 /media/sda1/keyfile -- cryptsetup luksAddKey fails on dapper https://bugs.launchpad.net/bugs/70671 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
