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http://tldp.org/HOWTO/Cryptoloop-HOWTO/loopdevice-setup.html
# dd if=/dev/zero of=/root/filesystem.ext3 bs=1M count=100 # losetup /dev/loop0 /root/filesystem.ext3 # losetup -a # mkfs.ext3 /dev/loop0 # mount -t ext3 /dev/loop0 /mnt # umount /mnt/ # losetup -d /dev/loop0 # cat /etc/fstab ... /root/filesystem.ext3 /filesystem ext3 loop 0 0 ...