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I've found plenty of info online about how to encrypt a drive with TrueCrypt, but everything I found was either outdated or not for Linux.

Here's what I'm after: I want to encrypt my entire drive (except, of course, the part[s] of it I CAN'T encrypt because they're needed to boot). I don't wish to reinstall my OS unless absolutely necessary.

Could someone please tell me how to encrypt my entire drive on Linux (Ubuntu 10.04) with TrueCrypt (7.0a)?

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You might find that LUKS is easier to use. Both Debian and Ubuntu can as part of the text installer setup full disk encryption using LUKS. I am not ware of any current linux full disk encryption method that can be enabled post-install. – Zoredache Oct 7 '10 at 20:38
up vote 1 down vote accepted

I ended up using the "alternative" Ubuntu installation disc and using the encryption option they have at setup time. I did end up having to reinstall my OS.

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Here's the solution:

Basically, AES / LUKS support is in GRUB2 nowadays, but you need to compile it yourself (or at least back in March you had to).

No need to re-install!!! Let me know if you need more help.

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and read this:

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These really don't do anything for Linux. Both those are about just including the truecrypt boot-loader for a windows partition in GRUB. – Zoredache Oct 7 '10 at 20:41

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