Hi nopics,
there is no tutorial to follow. Mine is just one of the possible methods to copy data from a knoppix-data.img to a knoppix-data.aes

- Boot Knoppix without mounting any persistent file
- Open Root terminal
- preparing the working directory where mount knoppix-data.img, you can do it wherever you want. I use the ramdisk so I do not mind having to delete when I'm done. Turn off the computer and the ram clears
Code:
mkdir /ramdisk/img
- mount your knoppix-data.img in /ramdisk/img
Code:
mount -o loop=/dev/loop6 /path to/knoppix-data.img /ramdisk/img
- preparing the working directory where mount knoppix-data.aes
Code:
mkdir /ramdisk/aes
- mount your knoppix-data.aes in /ramdisk/aes
Code:
mount -t ext2 /path to/knoppix-data.aes /ramdisk/aes -o encryption=aes,keybits=256,loop
- insert correct knoppix-data.aes password
- copy from /ramdisk/img to /ramdisk/aes using rsync (is a file transfer program)
Code:
rsync -ax /ramdisk/img/* /ramdisk/aes