So I have an external Lacie Rugged Diskt 1tb. There's two partitions in the disk. One of them is 880Gb and the other 120, or something like that. The real problem is that I have a very important work backup there and all the HDD analyzers show the drive as empty, but when I access it, it is actually almost full and I can look at all the files. I'm worried that my system will see this as empty space and start replacing important data. Any advice? Some screen captures: Here you can see in the section "About this mac" Capacidad = Capacity, Espacio libre = free space, espacio utilizado =used space in another example: So here we can see graphically that is mostly empty except for the fact that if we add the numbers in audio, videos, photos we have almost 600gb used but the graphic shows just about 40 gb used. For further example here is a screen capture of one of the biggest backups: WTF, I need some help I don't want to accidentaly overwrite something.