Troubleshooting360 ACPI<Windows System Root>\SYSTEM32\DRIVERS(usually C:\WINNT\SYSTEM32\DRIVERSor C:\WINDOWS\SYSTEM32\DRIVERS).ACPIStand By &HibernationStand By and Hibernation are currently not supported on Windowssystems that run with Neoware Image Manager. NVD.SYS driver ver-sion 1.0.0.5 and after implements a mechanism that prevents StandBy or Hibernation to occur in most cases. If the system emits arequest to enter into Stand By or Hibernation mode, NVD.SYS willrefuse the request and Windows will display a message stating thatNeoware Image Manager emulated Disk Drive device pre-vented the system from entering into Stand By or Hiberna-tion mode.Shutdown & RebootNVD.SYS ShutdownDelayIn order for disk read and write requests to be processed in a shortperiod of time after Neoware Image Manager virtual disk drivershave received shutdown notification, a parameter in NVD.SYS can betuned.This parameter is a registry value. By default, it has the value 3,which means that disks requests can be treated during 3 secondsafter Neoware Image Manager virtual disks have received the sys-tem shutdown request to power off or re-start the Client.This grace delay may be needed by some system components, espe-cially some network card drivers.You can tune this parameter according to experience. If some prob-lems at shutdown occur, such as the client PC not being actuallyshutdown, with black screen or still with the mouse pointer beingdisplayed, you can increase the shutdown_timeout parameter. A
