switch to windows
scandisk ntfs-3g disk -> ok
move some file in another disk (a big file and some little file)
remake scan-disk ntfs-3g disk -> impossible complete scan disk
reboot with scandisk at startup fix the error
no file loses.
For test, when i switch to windows
even i make a scandisk to the ntfs-3g partition
before and after the use.
Today no problems with the same operations