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I did not chose to encrypt the full disk when I installed Ubuntu. Can I do it now?

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up vote 1 down vote accepted

for encrypting file system in Linux you can use a tool called eCryptfs.

more information for about how to use this tool can be found here and the tool official them carefully.

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Thanks mate I'll have a look – statquant Jan 26 '13 at 15:25
This answer could use a little improvement. While the link may contain valuable information it might be better to post at least an overview here. I also want to mention that this link is intended for debian. – guntbert Jan 26 '13 at 18:39

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