I posted this on &T2 as well, but I found it on my hard drive so here you go again:
Got a pesky roommate or sibling that needs to be taught a lesson? Put some (or all?) of their files where they can't get them!
1. Create a live cd/usb of your favorite Linux distro and boot it on the target computer
2. Mount their C: drive or any other hard drive you wish to mess with
3. Put the contents of the desired directory (Desktop, documents, music, images, etc.) in a folder that has one of the forbidden windows characters
in it. The forbidden characters are as follows / : * ? " < > |
If you make the folders from the terminal you'll need to use the backslash escape character (\) before \, ;, *, ', ", |, <, and >.
? and : seem to work without a problem. You can also just right click and create a new folder from there. When you type it in from there, you shouldn't need the escape character.
4. When they click on this folder and try to open it, windows will tell them it's an invalid file name and then not be able to open
the folder. They won't be able to delete it either, so they'll be stuck with it until they either boot into a Linux environment and
change it themselves, or (if they aren't very savvy), give in to your demands and have you fix it.
Hide the porn! or System32!