Hi Jari, Max and all, Ubuntu Jaunty has CONFIG_BLK_DEV_LOOP=y, which prevents you from loading the loop-aes modules if you build them externally, so in order to use them you must build your own kernel as well. At the present, I'm compiling my own kernel which is painful for only this (albeit important!) reason. References: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/372781 https://bugs.launchpad.net/ubuntu/+source/loop-aes-source/+bug/342902 A previous post has discussed the use of /dev/xloop[0-7]: http://mail.nl.linux.org/linux-crypto/2009-05/msg00010.html Can anyone comment on the way forward? I personally cannot see why the loop should not stay as a module (status quo) but that seems to have been knocked back in some quarters (see comments re: "kernel feature" on bug https://bugs.launchpad.net/ubuntu/+source/loop-aes-source/+bug/342902/comments/10 ). Is there any revised comment as to getting loop-aes into the kernel mainline? Cheers, Daniel. -- Daniel Harvey <daniel@xxxxxxxxxxxxxxx> - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/