IoVolumeDeviceToDosName

NTFSD
1

hi,

i am using the IoVolumeDeviceToDosName call to retrieve drive letters. this
works for usb thumbdrives and floppies. but with virtual volumes, i get an
STATUS_OBJECT_NAME_NOT_FOUND error. with WinObj, i can see the virtual
volume’s drive letter symbolic link to the device. does anyone knows why the
call will fail?

thanks!

Ampsi

2

This API sends a Mount Manager IOCTL that must be responded to. The
virtual volume driver must be updated to handle it.

Ampsi Ho wrote:

hi,

i am using the IoVolumeDeviceToDosName call to retrieve drive letters. this
works for usb thumbdrives and floppies. but with virtual volumes, i get an
STATUS_OBJECT_NAME_NOT_FOUND error. with WinObj, i can see the virtual
volume’s drive letter symbolic link to the device. does anyone knows why the
call will fail?

thanks!

Ampsi

–
Nick Ryan
(Microsoft Windows MVP for DDK)

3

thanks! so what is the IOCTL that should be handled? i will try to ask the
developer to add in the handling.

Ampsi

----- Original Message -----
From: “Nick Ryan”
Newsgroups: ntfsd
To: “Windows File Systems Devs Interest List”
Sent: Thursday, January 22, 2004 00:28
Subject: Re:[ntfsd] IoVolumeDeviceToDosName

This API sends a Mount Manager IOCTL that must be responded to. The
virtual volume driver must be updated to handle it.

Ampsi Ho wrote:

> hi,
>
> i am using the IoVolumeDeviceToDosName call to retrieve drive letters.
this
> works for usb thumbdrives and floppies. but with virtual volumes, i get an
> STATUS_OBJECT_NAME_NOT_FOUND error. with WinObj, i can see the virtual
> volume’s drive letter symbolic link to the device. does anyone knows why
the
> call will fail?
>
> thanks!
>
> Ampsi
>

–
Nick Ryan
(Microsoft Windows MVP for DDK)

—
Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: xxxxx@hotmail.com
To unsubscribe send a blank email to xxxxx@lists.osr.com

4

One of the IOCTLs in mountdev.h or mountmgr.h. It should be pretty easy
to figure out which by experimentation.

Ampsi Ho wrote:

thanks! so what is the IOCTL that should be handled? i will try to ask the
developer to add in the handling.

Ampsi

----- Original Message -----
From: “Nick Ryan”
> Newsgroups: ntfsd
> To: “Windows File Systems Devs Interest List”
> Sent: Thursday, January 22, 2004 00:28
> Subject: Re:[ntfsd] IoVolumeDeviceToDosName
>
>
> This API sends a Mount Manager IOCTL that must be responded to. The
> virtual volume driver must be updated to handle it.
>
> Ampsi Ho wrote:
>
>
>>hi,
>>
>>i am using the IoVolumeDeviceToDosName call to retrieve drive letters.
>
> this
>
>>works for usb thumbdrives and floppies. but with virtual volumes, i get an
>>STATUS_OBJECT_NAME_NOT_FOUND error. with WinObj, i can see the virtual
>>volume’s drive letter symbolic link to the device. does anyone knows why
>
> the
>
>>call will fail?
>>
>>thanks!
>>
>>Ampsi
>>
>
>

5

thanks, will do.

Ampsi

----- Original Message -----
From: “Nick Ryan”
Newsgroups: ntfsd
To: “Windows File Systems Devs Interest List”
Sent: Sunday, January 25, 2004 07:39
Subject: Re:[ntfsd] IoVolumeDeviceToDosName

One of the IOCTLs in mountdev.h or mountmgr.h. It should be pretty easy
to figure out which by experimentation.

Ampsi Ho wrote:
> thanks! so what is the IOCTL that should be handled? i will try to ask the
> developer to add in the handling.
>
> Ampsi
>
> ----- Original Message -----
> From: “Nick Ryan”
> Newsgroups: ntfsd
> To: “Windows File Systems Devs Interest List”
> Sent: Thursday, January 22, 2004 00:28
> Subject: Re:[ntfsd] IoVolumeDeviceToDosName
>
>
> This API sends a Mount Manager IOCTL that must be responded to. The
> virtual volume driver must be updated to handle it.
>
> Ampsi Ho wrote:
>
>
>>hi,
>>
>>i am using the IoVolumeDeviceToDosName call to retrieve drive letters.
>
> this
>
>>works for usb thumbdrives and floppies. but with virtual volumes, i get an
>>STATUS_OBJECT_NAME_NOT_FOUND error. with WinObj, i can see the virtual
>>volume’s drive letter symbolic link to the device. does anyone knows why
>
> the
>
>>call will fail?
>>
>>thanks!
>>
>>Ampsi
>>
>
>

—
Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

You are currently subscribed to ntfsd as: xxxxx@hotmail.com
To unsubscribe send a blank email to xxxxx@lists.osr.com