\\?\volume{d8768018-49ec904c-60dd50830629}\ will not optimize and stays at 21%                             

JN

Was that by chance a reserved system partition?  What did you try to defrag it with?

Hi Johnnynik,

We need more information to help you analyze your issue. What volume did you want to cleanup?

Please follow this guide to defrag the drive:

Improve performance by optimizing your drive

http://windows.microsoft.com/en-IN/windows-8/improve-performance-optimizing-hard-drive

Hi Johnnynik,

We need more information to help you analyze your issue. What volume did you want to cleanup?

Please follow this guide to defrag the drive:

Improve performance by optimizing your drive

http://windows.microsoft.com/en-IN/windows-8/improve-performance-optimizing-hard-drive