Migration to Linux - Disk Encryption

I've been using TrueCrypt on Windows for my disk encryption needs for a while now, and chose it in part due to its multi-platform capabilities. Now that I'm dual-booting between Windows XP and Ubuntu (although rarely switching back to Windows), I needed a way to access the same encrypted disk from both OS's. Fortuneately, TrueCrypt exceeds my needs.

I downloaded the package for my Linux distribution (Ubuntu), installed the dmsetup dependency, then truecrypt:

apt-get install dmsetup
dpkg -i truecrypt_4.2a-0_i386.deb

Create the directory where I want my encrypted disk mounted:

sudo mkdir /media/crypt

Now all will work fine but I'll need to mount the encrypted disk via sudo which will give permissions to root. My user id needs read & write access, so I need to make sure the user id bit is set on the truecrypt binary:

chmod u+s /usr/bin/truecrypt

All good, now I can mount the encrypted disk file located on my mounted NTFS partition:

truecrypt -u /media/ntfs/crypt /media/crypt