I some times encounter an error when I try to open an NTFS partitionof my hard disk on Ubuntu Operating System.
I have installed
UbuntualongsideWindows 8.1.
Update:
when I shut down windows, turn on Ubuntu and try to open disk it produces an error.
but
then I restart my computer. turn on again Windows then restart Windows. and this time if I turn on Ubuntu and open Drives. they easily open, without showing error.