Error mounting /dev/sda5 at /media/goldmoon/Files: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000" "/dev/sda5" "/media/goldmoon/Files"' exited with non-zero exit status 14: The disk contains an unclean file system (0,0).
Metadata kept in Windows cache,refused to mount.
Failed to mount '/dev/sda5': 不允许的操作
The NTFS partition is in an unsafe state. Please resume and shutdown
Windows fully (no hibernation or fast restarting),or mount the volume
read-only with the 'ro' mount option.

解决方案：

sudo ntfsfix /dev/sda5