oot@plab:~# cryptsetup -y luksFormat /dev/hda3 WARNING! ======== This will overwrite data on /dev/hda3 irrevocably. Are you sure? (Type uppercase yes): YES Enter LUKS passphrase: Verify passphrase: Unable to obtain sector size for /dev/hda3Failed to setup dm-crypt key mapping. Check kernel for support for the aes-cbc-essiv:sha256 cipher spec and verify that /dev/hda3 contains at least 133 sectors. Failed to write to key storage. Command failed.root@plab:~# lsmod | grep aes aes 28864 0 root@plab:~# lsmod | grep sha256 sha256 12288 0 root@plab:~#