TrueCrypt is an open source encryption software which allows you to keep your data and files safe and prevent them from unauthorised access.
To install TrueCrypt, first download the Linux version of TrueCrypt from here.

Make sure you select the .deb file from the dropdown menu. Once the download is complete you will see that the file is archived into a .tar.gz file. Right-click on the file and select “Extract Here”.
Once the .deb file has been extracted, double-click on it to start installation. Follow the installation steps on the screen until the setup is complete.
You can find TrueCrypt by going to Applications -> Others.
December 11, 2008 at 5:28 am
Tried it…does not work.
December 11, 2008 at 3:19 pm
@charlie
Which part does not work?
December 28, 2008 at 1:16 pm
Nass, this worked just fine. I’m new to Ubuntu…
I downloaded the latest 64bit version of truecrypt and installation was a breeze.
Thanks mate.
March 3, 2009 at 6:29 pm
I think you missed a step. The tar.gz file extracts to an executable. When you run the executable, the program asks whether you want to install the .deb package, or just extract the .deb file to /tmp. From there, you can double-click on the .deb file and install it.
March 6, 2009 at 10:04 am
Just tried the installation. Getting an error “Wrong architecture ‘i386′”. Any ideas?
May 14, 2009 at 1:40 am
Under File Management Preferences, make sure you have “Run Executable Files when they are opened” selected. If you have “View Executable Files when they are opened”, Ubuntu will try to view the file in Text Editor.
August 31, 2009 at 7:52 pm
i cant get it to work. the debi installer runs, but the “install” button is greyed out. any ideas?
October 1, 2009 at 10:44 pm
“Just tried the installation. Getting an error “Wrong architecture ‘i386′”. Any ideas?”
You need to download x64 instead of x86.
October 15, 2009 at 11:26 pm
@William
I have had this greyed out install button on just one of my computers, on the rest it worked fine. The one failing was an Asus eee 1000HE, the only dual core processor in the lot. Maybe the problem is hardware related?