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.