Problem mounting a virtual disk on on bootcamp

Hi,

I have a non-plug and play virtual disk driver. Which has worked for me for years with no problem. But now only on computers where Windows 7 is installed on a Mac using BootCamp 3.1 . what I see is that the drives mounted by my driver arrive a little late. I have a service that needs to open a file stored on this VD but it takes couple of tries with few seconds delay between the open operation to be successful. I notify the mount manager by using IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION. Anyone has any ideas as to how I can speed up the arrival of the drives.

Thanks