Specify Windows installation file location
Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
Registry
HKLM
Software\Policies\Microsoft\Windows NT\Setup Options
SourcePath text Description
Specifies an alternate location for Windows installation files. If you enable this policy setting, enter the fully qualified path to the new location in the "Windows Setup file path" box. If you disable or do not configure this policy setting, the Windows Setup source path will be the location used during the last time Windows Setup was run on the system.