Linux挂载硬盘出错：$LogFile indicates unclean shutdown (0, 0)

前一次还挂载好好的，今天在挂载NTFS的分区就不行了，出现如下错误信息和提示：

$LogFile indicates unclean shutdown (0, 0)

Mount is denied because NTFS is marked to be in use. Choose one action:

Choice 1: If you have Windows then disconnect the external devices by
clicking on the 'Safely Remove Hardware' icon in the Windows
taskbar then shutdown Windows cleanly.

Choice 2: If you don't have Windows then you can use the 'force' option for
your own responsibility. For example type on the command line:

mount -t ntfs-3g /dev/sdb1 /media/sdb8 -o force

Or add the option to the relevant row in the /etc/fstab file:

/dev/sdb1 /media/sdb8 ntfs-3g force 0 0

解决方案已经列出来了，

　　一是：重启进入Windows，然后把硬盘安全移除，然后在进入Linux（我的是CentOS 7）就可以挂载了。

　　二是：强制挂载，示例：mount -t ntfs-3g /dev/sdb1 /media/sdb8 -o force，也就是在我们通常使用的挂载命令之后加上 -o force的选项即可。