Encryption on USB - Mac & Windows partitions I have a  64GB USB stick which I want to use on both my (Mountain Lion) iMac and my (work) Windows 7 laptop.  I don't want to or need to share files across platforms and require the following structure:

Partition 1 - Mac OSX Journaled case-sensitive Encrypted
Partition 2 - Windows FAT 32 (not encrypted)

Each method I have tried doesn't work as it appears that to allow encryption on the Mac partition, the root partition scheme needs to be GUID.  Doing this means my windows machine can't see the (FAT32) windows partition.

If I set the partition scheme to MBR, disk utility doesn't show the option to format the Mac partition as encrypted. 

It may be that there's just not a solution to this and I'll need to carry 2 USB sticks or get into sparse disk images, but confirmation of this would be useful. I've read similar posts on the stack exchange &amp; elsewhere but none seem to cover the exact same set-up.

Many thanks for any help
If you don't actually require case-sensitivity, Truecrypt is a free and open-source encryption system that will allow you to do either encrypt an entire volume using the Mac OS Extended filesystem or make a encrypted file container (basically an encrypted folder) that can be used to save files as if it were a separate volume.

You will need to download the program from the link above and install it. The Truecrypt program itself will allow you to create encrypted volumes/file containers and mount the encrypted volumes or file containers to your system to use them.