Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'd like to encrypt my system disk and use a keyfile stored on a USB flash. I was planning to use truecrypt, but it doesn't support keyfiles for system drive encryption.

share|improve this question
If you can set up your USB flash drive as an Emergency Boot Disk (like a Rescue Disk), then alter the TrueCrypt boot process so that it fails even with the right password, this might be useful to creating the same effect (except that you'd be booting from your USB flash drive and still entering a password). I haven't tried this, but as long as you can boot from USB then it should be possible to make it work this way. – Randolf Richardson Aug 11 '11 at 8:35

Our company laptops are encrypted with Truecrypt and you have to use a USB key called a Yubikey to 'unlock' them.

enter image description here

The keys 'type in' a 32-character string/passcode when the sensor is pressed. Very simple to setup.

share|improve this answer
I was looking use USB flash drives I already have – teeth Aug 11 '11 at 9:27

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.