I'm still trying to get to grips with the file system but I have a related problem. I'm running a multiboot system using Hardy on sda9 as my first choice. My problem is that I can't update it as the sda9 partition appears to be full. It's a 10Gb partition.
What do I need to do to see what's on that partition. My other distros, also on 10Gb partitions each seem to have about 6Gb free.
I try to store music & photos etc on other NTFS partitons so they're accessible from Windows too but I get the feeling some stuff is being stored on sda9 that shouldn't be.