when i use the DDK’s tool “devcon” to install a new device, like below
" devcon install xxx.inf “usb\pid_0fca&vid_8004” "
it always create a root-enumerated device (shown in DeviceManager).
My questions are:
1 - what’s the root-enumerated device for ?
2 - can i install the device driver without creating this root-enumerated device ?
Devcon update is the command you want to update the driver on the usb enumerated device. a root enumerated device is for a software only driver that needs a pnp stack to do pnp like things like enable device interfaces.
d
-----Original Message-----
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of xxxxx@sierraatlantic.com
Sent: Tuesday, April 13, 2010 11:05 PM
To: Windows System Software Devs Interest List
Subject: [ntdev] what’s the root-enumerated device
when i use the DDK’s tool “devcon” to install a new device, like below " devcon install xxx.inf “usb\pid_0fca&vid_8004” "
it always create a root-enumerated device (shown in DeviceManager).
My questions are:
1 - what’s the root-enumerated device for ?
2 - can i install the device driver without creating this root-enumerated device ?
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> 1 - what’s the root-enumerated device for ?
Hardware-less device which only exists as a registry record.
2 - can i install the device driver without creating this root-enumerated device ?
devcon dp_add, then attach the device physically, the OS will do the rest of the installation itself.
–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com
yes…i know the “devcon update” doesn’t need to create the root-enumerated device. but we have to plug in the device first.
If not plugging in the device, how can i install the driver without creating the root-enumerated device ?
> If not plugging in the device, how can i install the driver without creating the root-enumerated device ?
devcon dp_add
–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com
does “devcon dp_add” execute the actions written in the inf file, like
copying files, installing co-install component ?
On 4/14/2010 5:22 PM, Maxim S. Shatskih wrote:
> If not plugging in the device, how can i install the driver without creating the root-enumerated device ?
>
devcon dp_add
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>does “devcon dp_add” execute the actions written in the inf file
It preinstalles the driver package to Driver Store, from where it will automatically be silently installed when the device will appear.
–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com
Ying Zhang wrote:
does “devcon dp_add” execute the actions written in the inf file, like
copying files, installing co-install component ?
No. It copies the files into the driver store, so the files actually
get written and co-installed when the device is first detected. That’s
what you want. Really.
–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.