[I am cc'ing this to linux-crypto just so everyone can know somebody has responded. I know most of the linux-crypto readers already know the answer.] >mke2fs -b 2048 /dev/loop0 >mount /dev/loop0 /mnt ...disaster. Perhaps we need a FAQ entry for the initial value problem. The loop device defaults to some initial block size other than 2048, and "mk2efs -b 2048" is not enough to change that. I believe you could use "blockdev --setbsz 2048 /dev/loop/0" to set it before you do the mke2fs, although you can get the same effect by first trying to mount it with ext2 (and failing) and then doing the mke2fs and trying to mount it again. The better solution is to build cryptoapi with ./configure --enable-iv-mode-sector. Look for "IV_MODE_SECTOR" in the README in the top level cryptoapi source directory. Adam J. Richter __ ______________ 4880 Stevens Creek Blvd, Suite 104 adam@xxxxxxxxxxxxx \ / San Jose, California 95129-1034 +1 408 261-6630 | g g d r a s i l United States of America fax +1 408 261-6631 "Free Software For The Rest Of Us." Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/