The Disk Contains an Unclean File System

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I recently decided to use Windows 8.1 and also run Ubuntu 14.04 LTS at the same time (dual boot). The issue that I’m facing most of the times with this setup is when I mounted Windows file system from Ubuntu I always get the following error.

Error mounting /dev/sda6 at /media/rejohn/DATA: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sda6" "/media/rejohn/DATA"' 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/sda6': Operation not permitted
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.

I never encountered this issue before with Windows 7 and Ubuntu 13.10 tandem. Searching over the Internet, I learned that Windows 8.x has Fast Startup enabled by default. By disabling this feature the issue is resolved. Follow these steps on how to disable Fast Startup.

1. Open the Control Panel, and click on the Power Options icon.
2. Click on the Choose what the power buttons do link on the left side.
3. Click on the Change settings that are currently unavailable link at the top.
4. Finally, Under Shutdown settings, uncheck the Turn on fast startup box. Click on the Save changes button.

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