When "loopback device support" and "Twofish encryption for loopback device" is compiled INTO the kernel, the "losetup -e twofish /dev/loop0 /encrypted-file" command fails with the error: "ioctl: LOOP_SET_STATUS: invalid argument" If they are compiled as modules, everything works OK. I have tred it with many versions of the SuSE kernels, and the result is always the same !. Any suggestions on how to get it to work. Thanks in advance Bo Jacobsen