Rob, following is some information for how GParted determines the unused space in a partition.
For the ext4 file system GParted uses the following command to retrieve information: dumpe2fs -h /path-to-partition Where /path-to-partition is something like /dev/sda3 Then GParted parses the output to find "Free Blocks:" and "Block size:" to calculate the amount of free space. Please note that free blocks is not necessarily exactly the same as available free space in the file system. The relevant GParted code can be found in the set_used_sectors method at the following link: http://git.gnome.org/browse/gparted/tree/src/ext4.cc#n64 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670628 Title: nautilus, gparted, and disk analyzer disagree about free space. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs