Ntfs.sys driver takes a long time to mount a large volume in Windows Vista or in Windows Server 2008
On a computer that is running Windows Vista or Windows Server 2008, the Ntfs.sys driver takes a long time (several seconds or minutes) to mount a large volume.
This issue causes a delay in volume arrival and in volume mounting. Therefore, applications and services may be unable to access the volume.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB2525064.