Fedora 17 : Nautilus, after mount manually, device will not see again in Device section

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http://unix.stackexchange.com – In Nautilus, I see left pane is useful. It contains shortcut to another place. Such as : At device : I can see Windows Partition (although I does not mount yet) or at my computer, some shortcut to go Home/Desktop/Documents/Downloads.... When I mount Windows partitions in Nautilus (double click, a confirm windows appear to ask...). After I mount, I still can see this device in left pane. But, if I mount by hand, (I do by hand because I want auto mount every time I start using Linux). I do this by go to terminal and type : mount -t ntfs /dev/sda1 /mnt/C It will lost this icon in left (HowTos)