TrueCrypt 6.0a How To: Free Full Disk Encryption in Windows XP
Our HOWTO: Windows full disk encryption with TrueCrypt 5.0 article is the most popular article we've published on Devil's Advocate Security with over 900 page views, and we're past due to write an updated article about TrueCrypt 6.0a.
A number of changes were made between 5.0 and 6.0a. These include:
- Support for encrypted hidden operating systems with plausible deniability
- Hidden volume creation for MacOS and Linux
- Multi-core/multi-processor parallelized encryption support
- Support for full drive encryption in XP and Vista even with extended and/or logical partitions
- A new volume format which increases performance, reliability, and expandability
- A number of bug-fixes and other features.
Without further ado, here is our TrueCrypt 6.0a Windows installation walk-through.
TrueCrypt full disk encryption walkthrough
1. Download TrueCrypt and install it. Accept the license, and select "Install" as your option rather than "Extract". TrueCrypt will ask you for a number of setting options - if you are unfamiliar with them, the defaults should be reasonable for most users. Once you click next, you'll see a message that TrueCrypt has sucessfully installed. Click OK, then click Finish and continue onwards.
2. Start TrueCrypt - if you did a default install, you will have a blue and white key icon on your desktop. TrueCrypt will ask you to read the tutorial if you haven't read it before. Once you've through, you'll see the TrueCrypt main window.
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3. Select System, then Encrypt System Partition/Drive.
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4. If you want to create a hidden operating system for plausible deniability, this is when you should select the "Hidden" option. For the purposes of this walk-through, we will simply do a "Normal" installation with the intent of protecting data, rather than hiding it.
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6. TrueCrypt will ask about Host Protected Areas, which may contain your system diagnostics, RAID tools, or other data. If you're unsure, you should likely select "no" for safety. Most programs do not store sensitive data in the HPA.
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7. If you are running a multi-boot system with multiple operating systems, the next question is relevant for you. For most users, selecting Single Boot for their single OS is the route to take. We'll go with single boot for this walk-through.
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8. Now you need to select your encryption options - the defaults of AES and RIMEMD-160 should be find for most users. If you have specific compliance requirements, make sure you meet them here.
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9. Type your password, or better, a strong passphrase. This will let you access your drive, so you must remember this passphrase!
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11. TrueCrypt forces you to create a TrueCrypt Rescue Disk, which allows you to restore your boot loader if it is damaged, lost, or you otherwise cannot access the TrueCrypt volume. By default, it will save an ISO file to your My Documents folder. You will need to burn the ISO to a CD, and then let TrueCrypt verify that it works.
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15. When you reboot, simply enter your password, and your encrypted partition will unlock. Your normal OS boot will occur.
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You now have a fully encrypted disk. Make sure you remember your password and keep your rescue CD in a safe place!
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