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How to encrypt data on an external hard drive?

This is my problem, I'm a student and I live with two roommates. When I go to school, I carry my external HDD with me for protection, because I'm scared that they will copy everything from the HDD when I'm not around to see it. So I googled and saw that encryption is the only way to secure with password, but I'm scared to try why I think that it will delete all my data. The external hard drive is Apacer AC202 SATA External Hard Drive. With it comes a backup software that makes invisible partition so no one can see it, but again, I'm scared to try. So please help me to understand encryption more clearly, step by step (it will be more helpful with pictures or video). Please share other options for securing the HDD to.

Thanks in advance.

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marked as duplicate by Arjan, Mehper C. Palavuzlar, Gilles, Diago Nov 6 '10 at 13:57

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Any particular OS? –  Ignacio Vazquez-Abrams Nov 6 '10 at 10:34
    
possible duplicate of How to encrypt data on an external hard drive? (Though this very question has some additional requests, but those many requests actually make this "too localized" to me, which the lack of detail in the first answers already indicate too.) –  Arjan Nov 6 '10 at 11:17
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up vote 2 down vote accepted

encyption is ownly a problem if you forget your password[generally] try turecypt-http://www.truecrypt.org/ It free, opensource and comes with more information than i can provide.Follow the instructions and you should find it as simple as logon. edit-more info,related linksThese sites will help your understanding of encyption. http://www.governmentsecurity.org/EncryptionInformationandArticles.php http://www.governmentsecurity.org/forum/index.php?showforum=34

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sorry meiko i had my answer half written your -vote up and answer-if? –  mic84 Nov 6 '10 at 10:55
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I usually use this program, so far i like it :D It provides a good tutorial for the usage you are looking for :)

http://www.truecrypt.org/

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