Extension INF to create software device node to act as the independently targeted hardware for the firmware update package. Many device types, however, do not allow a single physical device to enumerate more than one device node. In this case, use an extension INF that specifies the AddComponent directive to create a device node that can be targeted by Windows Update and install the firmware update driver on it. The following snippet from an INF file shows how you can do this:.
When installed, this INF creates the following device hierarchy:. A sample extension INF to create a new identity for drive firmware updates is provided below. For a software-enumerated component device to function, its parent must be started. The StorFwUpdate component does not perform any validation signature verification or decryption of the firmware binary payload.
If this level of feature is required then hardware partners can write their own storage firmware update driver. EXE as shown below. For more information, see Get-StorageFirmwareInformation. Move to the directory on your system that contains the driver extension package INF file. For example, type cd. Verify that the extension INF file contains the information for the drives you are updating. As the new software node is created as a child of a boot critical device, a reboot is required to take effect.
In Device Manager, select Disk drives , then expand the node and select the disk drive you have updated. Once you have selected the drive you have updated, in the Device Manager View menu, select Devices by connection. Click on the selected drive node, then click to expand. You will see a child Generic software component under the drive node.
Right-click on the Generic software component and click Properties. In the Properties dialog window, select the Details tab, then select Hardware Ids from the Property drop down list view the Hardware ID for the Generic software component on the drive node.
Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. Storage drivers include class , port , miniport , and filter drivers. Typically, a device vendor will implement a miniport driver for a specific adapter or adapter type. Although not common, a new storage class can be defined and a new class driver developed for it. Storage driver development is usually limited to writing a miniport driver to work with the StorPort port driver.
For storage management, WMI providers are developed as a control interface to a driver. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. The root of this tree is a functional device object FDO for a storage adapter or for another driver stack integrated with the storage stack. The leaves of this tree are device objects for use by file systems and user-mode applications.
Like any PnP driver, a storage class or storage filter driver adds itself to the tree in its AddDevice routine by creating a device object with IoCreateDevice and attaching it to the device stack with IoAttachDeviceToDeviceStack , using the pointer to the device object passed to the driver's AddDevice routine by the PnP manager at initialization.
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