I never tried this encryption before and I would like some help. I have few questions about FileVault 2 and Carbon Copy Cloner 1) I read that I can use filevault 2 to encrypt an external hard-drive but I have to install a Recovery HD on it , if I want it to be bootable . If I do not do that, will I still be able to access the HDD? Why do I need a recovery HD? 2) Can I encrypt an external HDD , but not my laptop's hdd , and then use Carbon Copy Cloner to do backups?? Or if my Laptop's HDD is not encrypted neither my back HDD will be? 3) Will encrypting my HDD give me issues later when I buy a new computer and decide to use Migration Assistant? is there anything else I should worry about?