Microsoft KB Archive/256204

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Unsigned Drivers Not Installed During Sysprep Mini-Wizard Without "-pnp" Switch

Article ID: 256204

Article Last Modified on 9/28/2007


  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition

This article was previously published under Q256204


The Sysprep mini-wizard automatically installs any PCI/PC Card device as long as the following criteria are met:

  • The files/drivers are located on the volume in the OemPnPdriverspath path.
  • No input is required from the user.

If these requirements are met, the PCI/PC Card Plug and Play device is installed during the Sysprep mini-wizard.

For example, assume that the target computer for the Sysprep image contains a different model of network adapter. The required drivers are included with Windows 2000, so the device is installed during the mini-wizard. However, if the drivers are supplied by the manufacturer and are not digitally signed, the criteria are not met and the installation of the device is postponed until an administrator logs on to the computer.


The driver signing policy for GUI-mode Setup and the Sysprep mini-wizard is set to "Warn." Even if the "DriverSigningPolicy" setting is set to "Ignore" in the Sysprep.inf file, unsigned driver installation is postponed until the first logon during the mini-wizard.

NOTE: For an unattended Setup in which a full version of GUI-mode Setup is run, the driver is installed, but the user may receive a warning stating that the driver has not been digitally signed (depending on the value of the "DriverSigningPolicy" key in the answer file).

If you have unsigned drivers and you require that they be installed during the Sysprep mini-wizard, you can use either of the following methods:

  • Use the -pnp switch when you create your master image. This causes the mini-wizard to perform a full enumeration of all devices. Note that this adds about 5 to 10 minutes to the mini-Setup wizard, depending on the speed of the target computers.
  • Create your master image with the devices that require manufacturer-supplied drivers. This does not require the -pnp switch, and decreases the time it takes for the Sysprep mini-wizard to run.

NOTE: If you use the -pnp switch with Sysprep version 1.1 and you use the [SysprepMassStorage] section, you may notice that some mass-storage controllers that are not physically present in the target computers appear in Device Manager. This does not affect the computers; it is a cosmetic issue only. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

253340 Non-Present SCSI Devices Appear in Device Manager When You Are Using Sysprep Version 1.1

You can download Sysprep version 1.1 from the following Microsoft Web site:

Keywords: kbenv kbinfo kbsetup KB256204