Anyone tried encrypting their drive on Lion?

tech324 said:

With Lion you can now encrypt your whole drive now right? Has anyone done this on the new MBA? Any performance issues or any other issues with the encryption?

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Yes, that was one of the first things I did. I haven't noticed any performance issues. The only issue is that a Boot Camp installation can't read an encrypted Mac partition since the HFS+ drivers that Boot Camp installs don't work on an encrypted drive. That said, a virtual machine in Parallels or Fusion will still be able to access the Mac partition.

I had about 50GB to encrypt and ran it overnight, but I think the whole process took less than an hour. Decryption (if you decide to turn FileVault2 off) works the same way.

Anadtech has a good review of this

http://www.anandtech.com/show/4485/back-to-the-mac-os-x-107-lion-review/18