This powerpack expands on the Volumes powerpack to include support for Windows XP by using the standard defragmentation programs and the WIN32_LogicalDisk class.

Updated 08/01/2008 - Fixed a problem where $env:Windir\system32\ was not in $env:path variable so the command was not processing correctly.

Updated 08/05/2008 - Included a link (based on a request) for viewing Defragmentation Analysis.