Sure I have two internal hard drives. One has two partitions, one with XP and one with Windows 7. I can see all folders and files on XP. The other is not partitioned at all. The one I noticed not being able to be seen was on the Windows Partition. I haven't noticed any others not being able to be seen, but I would not be suprised if there were others. I noticed this one because it is one I access a lot. I tried enabling hidden folders and showing system files and that did nothing. I tryed manually typing in the folder address into the address bar and that didn't work either.
a little more detail please.
you say "on the windows partition" - WHICH partition? which folders exactly? system folders? stuff in your user folder?
do you only not see them when you search for them, or did you try to actually browse for them?
sounds like the same thing that happens when you have linux dual booted with win xp. Did the filesystem stay NTFS for Win 7? or was it modified. that's the only thing i can think of that would do that.