FSFD : "A device attached to the system is not functioning" message

NTFSD
1

Hi All,

We are working on a File system filter driver using MS IFS Kit;
The Main purpose is to trap Create, Open and Close requests for
disk files and and do virus checking;

The developementis not finished yet; We are half way through;
However I noticed that

A. if we attach the driver to the Primary partition( C:
drive, which has OS ) it gives the message box “A
device attached to the system is not functioning”
and it blocks the access to C: drive and D: drive (
Both local hard disk partitions.) through Windows UI
such as explorer;
B. A. if we attach the driver to the non-Primary
partition( D: drive )
above problem disappears.

Could any one please tell us what could be causes for this
behaviour ?..

regards,
Medha.

2

Are you passing ALL requests through? You must support all Irps, even the
one you are not interested in.

Pete

Peter Scott
xxxxx@KernelDrivers.com
http://www.KernelDrivers.com

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com]On Behalf Of Medha Madhukar
Manoli
Sent: Wednesday, April 03, 2002 7:13 AM
To: File Systems Developers
Subject: [ntfsd] FSFD : “A device attached to the system is not
functioning” message

Hi All,

We are working on a File system filter driver using MS IFS Kit;
The Main purpose is to trap Create, Open and Close requests for
disk files and and do virus checking;

The developementis not finished yet; We are half way through;
However I noticed that

A. if we attach the driver to the Primary partition( C:
drive, which has OS ) it gives the message box “A
device attached to the system is not functioning”
and it blocks the access to C: drive and D: drive (
Both local hard disk partitions.) through Windows UI
such as explorer;
B. A. if we attach the driver to the non-Primary
partition( D: drive )
above problem disappears.

Could any one please tell us what could be causes for this
behaviour ?..

regards,
Medha.

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3

Hi,
yes, i am handling all requests, i am passing the IRPs in which i
am not interested to dispatch function.
and the driver is working for non primary drive(on which OS is not
present),
but its not wotking for primary drive.
Please help me.
Medha
On Wed, 03 Apr 2002 Pete Scott wrote :

Are you passing ALL requests through? You must support all Irps,
even the
one you are not interested in.

Pete

Peter Scott
xxxxx@KernelDrivers.com
http://www.KernelDrivers.com

> -----Original Message-----
> From: xxxxx@lists.osr.com
> [mailto:xxxxx@lists.osr.com]On Behalf Of Medha
Madhukar
> Manoli
> Sent: Wednesday, April 03, 2002 7:13 AM
> To: File Systems Developers
> Subject: [ntfsd] FSFD : “A device attached to the system is
not
> functioning” message
>
>
> Hi All,
>
> We are working on a File system filter driver using MS IFS
Kit;
> The Main purpose is to trap Create, Open and Close requests
for
> disk files and and do virus checking;
>
> The developementis not finished yet; We are half way
through;
> However I noticed that
>
> A. if we attach the driver to the Primary partition( C:
> drive, which has OS ) it gives the message box “A
> device attached to the system is not functioning”
> and it blocks the access to C: drive and D: drive (
> Both local hard disk partitions.) through Windows UI
> such as explorer;
> B. A. if we attach the driver to the non-Primary
> partition( D: drive )
> above problem disappears.
>
> Could any one please tell us what could be causes for this
> behaviour ?..
>
> regards,
> Medha.
>
> —
> You are currently subscribed to ntfsd as:
xxxxx@KernelDrivers.com
> To unsubscribe send a blank email to %%email.unsub%%

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