mount exfat warning

Question

Using Xubuntu 14.04. I mounted an external drive which has multiple partitions one of them is of type exFat and I am mounting it using the command below I get a warning that not cleanly mounted,

sudo mount -t exfat /dev/sdc6 /media/exfat/
FUSE exfat 1.0.1
WARN: volume was not unmounted cleanly.
ahmed@xubuntu14:~$ sudo unmount /media/exfat/
sudo: unmount: command not found

Then I try to unmount it from file manager. it says failed to unmount exfat it is not in fstab are you not root ? can someone please advise how to unmount it again and mount it cleanly ?

Thanks, Ahmed

Answer 1

此消息表示关闭机器时可能未正确卸载卷

如果系统断电而未关机，则可能会发生这种情况。

要卸载卷，您应该运行以下命令：

sudo -i
umount /dev/sdc6

要诊断任何错误，您可以使用以下命令：

sudo -i
fsck.exfat /dev/sdc6

要修复错误应该使用 testdisk。

http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step