This is the screenshot of the properties of all files except /home:


My whole hard disk is of ~320 GB, then how is it so big?

  • Have you started your graphical file manager as root for this? – jobin May 17 '14 at 10:10

It is the file /proc/kcore which for some reason looks so big. Just exclude /proc from your folders list to get a more realistic result.

/proc/kcore specifically is a file which maps directly to every available byte in your virtual memory. It is a system file, provided by the virtual procfs filesystem, and is not a real file.

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