4. Final steps

Still inside chroot, modify /etc/fstab so that it contains:

/dev/loop0 / ext3 defaults 0 1

Delete /etc/mtab and exit from chroot. Finally, run "umount -d /mnt/efs" and reboot. If something goes wrong, you can still boot your unencrypted partition by entering "Linux root=/dev/hda3" at the LILO: prompt.

If everything went well, you can now re-partition your disk and encrypt hda3 as well as hda4. In the following scripts, we assume that hda3 will hold the swap device and hda4 will contain /home; you should initialize both partitions first:

shred -n 1 -v /dev/hda3 shred -n 1 -v /dev/hda4 losetup -e aes256 -S xxxxxx /dev/loop1 /dev/hda3 losetup -e aes256 -S xxxxxx /dev/loop2 /dev/hda4 mkswap /dev/loop1 mke2fs -j /dev/loop2

Then create a script in the system startup directory and update fstab:

cat > /etc/init.d/loop << "EOF" #!/bin/sh if [ "`/usr/bin/md5sum /dev/hda1`" != \ "5671cebdb3bed87c3b3c345f0101d016 /dev/hda1" ] then echo -n "WARNING! hda1 integrity verification FAILED - press enter." read fi echo "1st password chosen above" | \ /sbin/losetup -p 0 -e aes256 -S xxxxxx /dev/loop1 /dev/hda3 echo "2nd password chosen above" | \ /sbin/losetup -p 0 -e aes256 -S xxxxxx /dev/loop2 /dev/hda4 /sbin/swapon /dev/loop1 for i in `seq 0 63` do echo -n -e "\33[10;10]\33[11;10]" > /dev/tty$i done EOF chmod 700 /etc/init.d/loop ln -s ../init.d/loop /etc/rcS.d/S00loop vi /etc/fstab ... /dev/loop2 /home ext3 defaults 0 2