How can I lock my External Hard disk with password..?

How can I lock my External Hard disk with password..?? My external hard disk remains always connected to my PC. Now I want any software or method so that only I can access it.Actually I have to open a guest account on my PC….And I want to restrict access to my external hard disk from that account…..Please help me out….
Answer #1
http://www.truecrypt.org/
Answer #2
Try TrueCrypt.
Answer #3
check it
http://www.ehow.com/how_6901796_lock-external-hard-drive.html
PS: Google is your Friend.
Answer #4
encrypt it.
Answer #5
Yeah, use Truecrypt, or Stealthdisk, and create a large volume (obviously smaller than your hdd).
You have to then mount that volume from the external to access it – very tough encryption, even the FEDS can’t crack it.
Personally I prefer Stealthdisk, but Truecrypt is free and just as good.
Answer #6
Thankss to all…….
Gjoksi replied: http://www.truecrypt.org/the Meerkat replied: Yeah, use Truecrypt, or Stealthdisk, and create a large volume (obviously smaller than your hdd).
You have to then mount that volume from the external to access it - very tough encryption, even the FEDS can't crack it.
Personally I prefer Stealthdisk, but Truecrypt is free and just as good.solyendo replied: encrypt it.|Leader| replied: check it
http://www.ehow.com/how_6901796_lock-external-hard-drive.html
PS: Google is your Friend.HOUSE! replied: Try TrueCrypt.Gjoksi replied: http://www.truecrypt.org/