Derek,
Sorry for being so slow to respond.
This behavior is expected and normal on XP and W2K systems. This occurs because by default filter manager on those systems does not attach to any device objects until a minifilter loads.
You can change this behavior by setting the AttachWhenLoaded registry value to 1 and then rebooting. Thereafter filter manager will attach to the various device objects at boot time like it does on Srv03 SP1 and Vista (and beyond).
Read the IFSKit documentation on the AttachWhenLoaded registry key for more information. You should be setting this registry key to 1 when you install your product. Your installation system should reboot the system if it had to change the value.
Neal Christiansen
Microsoft File System Filter Group Lead
This posting is provided “AS IS” with no warranties, and confers no Rights
From: xxxxx@lists.osr.com [mailto:xxxxx@lists.osr.com] On Behalf Of Derek Dickinson
Sent: Friday, February 03, 2006 11:33 AM
To: Windows File Systems Devs Interest List
Subject: [ntfsd] FYI: Unusual filter manager behavior
The filter manager routines to enumerate volumes do not work until after the first mini-filter is loaded (at least on some systems).? The following is a cut and paste from a command prompt:
–
C:\test>fltmc volumes
No volumes found
C:\test>fltmc load minispy
C:\test>fltmc volumes
Dos Name??? Volume Name
------------------------------? ---------------------------------------
??? \Device\RdpDr
??? \Device\WebDavRedirector
??? \Device\LanmanRedirector
D:??? \Device\CdRom0
C:??? \Device\HarddiskVolume1
C:\test>
I had to modify some of my logic to account for this issue (i.e. I had to wait before playing the volume enumerate and match game).
Is this behavior in any bug reports or documented anywhere?
Derek
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