I am looking for a way to saftly keep some personal information (contacts personal files) ,maybe a journal on a usb flash drive with some sort of password protection on it. So when I plug in my flash drive it would prompt me for the password and I can then work on the files. When im done I save and all my info goes back to the flash drive. Is this possible? Free maybe even? I have done some searching online but so far the only option I seem to have is install linux on it. I tried one version but it ended up saving files on my main computer.