windows 7 - Shadow copy referencing invalid volume from symboliclink when using TrueCrypt

I recently replaced my motherboard after the last one failed (was shorting and causing random reboots). I'm sure this was not healthy for the machine, and that a clean install would do wonders, but I'd like to fix the current install.

That aside, I've been tracking down a pair of errors in the application log.

Volume Shadow Copy Service error: Error calling a routine on a Shadow Copy Provider {b5946137-7b9f-4925-af80-51abd60b20d5}. Routine details IVssSnapshotProvider::QueryVolumesSupportedForSnapshots(ProviderId,29,...) [hr = 0x80042302, A Volume Shadow Copy Service component encountered an unexpected error.
Check the Application event log for more information.
].

Operation: Query volumes supported by this provider

Context: Provider ID: {b5946137-7b9f-4925-af80-51abd60b20d5}
Snapshot Context: 29

Followed by

Volume Shadow Copy Service error: Unexpected error calling routine Error calling CreateFile on volume '\?\Volume{f4bda86e-049d-11e1-9255-bcaec56690a1}\'. hr = 0x80070020, The process cannot access the file because it is being used by another process.

This error is reproducible at command line, creating the two event log entries

C:\Windows\system32>vssadmin list volumes
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool

(C) Copyright 2001-2005 Microsoft Corp.

Error: The shadow copy provider had an unexpected error while trying to process
the specified command.

Using WinObj from Sysinternals, I have tracked down the global object.

'\?\Volume{f4bda86e-049d-11e1-9255-bcaec56690a1}\' - SymbolicLink -

'\Device\HarddiskVolume8'

Running DISKPART, and running the command "list volume" within it lists volumes 0 through 6, there is not a HarddiskVolume8.

How can I remove this reference to HarddiskVolume8, and get shadow copy up and running?

Answer

The problem was coming from TrueCrypt. The solution is to have TrueCrypt "mount volumes as removable media" in preferences.