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Preparation

Prepare a mount point for your data and change ownership.
# Create a mount point
sudo mkdir /media/cryptoUSB
# Set permissions for the owner
sudo chown stefan:stefan /media/cryptoUSB

Create an Encrypted Device

Encrypt the device with LUKS. Note that all data on the partition will be overwritten during this process.
# Create encrypted device
sudo cryptsetup --verify-passphrase luksFormat /dev/sdX -c aes -s 256 -h sha256

wget http://http.us.debian.org/debian/dists/stable/main/installer-i386/current/images/hd-media/boot.img.gz
zcat boot.img.gz > /dev/sdb
mount /dev/sdb /mnt/
wget http://cdimage.debian.org/debian-cd/6.0.2.1/i386/iso-cd/debian-6.0.2.1-i386-netinst.iso
cp debian-6.0.2.1-i386-netinst.iso /mnt
umount /dev/sdb


http://linux.koolsolutions.com/2009/02/25/installing-linux-on-usb-part-…