mantlepiecek on 06 January 2011
Ubuntu never hides any folders, just for your information. I use Ubuntu as a primary operating system and I know this. It only disallows you to open them if they are restricted, but it never hides them.
Seems to me they got corrupted. Maybe a virus attack? NTFS is easily recognised by Ubuntu.
The best thing to do is to completely re-install windows 7 but backup everything from your Ubuntu OS. Everything that you can.
SOMETIMES, however, its possible that a particular partition is not mounted. This can happen. However it should still show your Hard Disk divisions in Disk Utility Under Administraion Under System.
i.e. System -> Administration -> Disk Utility -> (Select your Hard Drive)
