How can I encrypt a USB drive and have it readable in OS 10.8, and Windows Vista and 7? For various reasons, including proprietary software compatibility and IT department idiocy, I have a Lenovo with Windows 7, and a crappy Panasonic Toughbook with Vista. I have a number of files which I need to keep in sync between these two machines, and my MacBook Air. My work machines are tightly locked down; I can't install any software, and the firewall blocks filesharing sites like DropBox. The Windows 7 laptop syncs its My Documents folder automatically, but only other Windows 7 machines can access this, not Vista or Mac. USB is the only solution left - but they're required to be encrypted. File Vault needs a GUID, which so far as I know precludes FAT or NTFS, which are required for Windows. My Windows 7 laptop has BitLocker To Go, which doesn't work with Vista. Is there any solution, or will I have to just keep a close eye on my stick?