hi I build kernel-2.6.2 with the flowing Instructions CONFIG_MODULES=y BLK_DEV_LOOP=n I build http://loop-aes.sourceforge.net/ciphers-latest.tar.bz2 ld -m elf_i386 -r loop_blowfish.o loop_blowfish.mod.o -o loop_blowfish.ko rm -f loop_blowfish.o loop_blowfish.mod.[co] .mod.[co] mkdir -p /lib/modules/2.6.2/block cp -p loop_twofish.ko loop_serpent.ko loop_blowfish.ko /lib/modules/2.6.2/block /sbin/depmod -a -F /lib/modules/2.6.2/build/System.map 2.6.2 sync Currently running kernel is 2.6.2 Modules were built for kernel 2.6.2 Building modules, stage 2. make[1]: Leaving directory `/usr/src/linux-2.6.2' for install make INSTALL_MOD_PATH=/lib/modules/2.6.2/kernel/drivers/block All is work :) root@zss:/home/hamer/sauv/crypto/ciphers-v2.0f#modprobe loop_twofish FATAL: Error inserting loop_twofish (/lib/modules/2.6.2/block/loop_twofish.ko): Unknown symbol in module, or unknown parameter (see dmesg) with dmesg : loop_twofish: Unknown symbol loop_unregister_transfer loop_twofish: Unknown symbol loop_register_transfer loop_twofish: Unknown symbol loop_compute_md5_iv ): please help thanx Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout ! Créez votre Yahoo! Mail sur http://fr.benefits.yahoo.com/ - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/