Windows 7: Prevent removing attached VHD, from safely removed attached media

Hi all,

I was just wondering if anyone knows a way to prevent users from removing a attached VHD from "Safely remove hardware and eject media", We have had multiple users eject the VHD when they are going to unplug their USB and they are ejecting the attached VHD insted.

Any help would be much appreciated.

(Apologies if this is in the wrong section)

Still cant find a solution to this,

I have found the DeviceOverRides in registry "HKLM\SYSTEM\CurrentControlSet\Control\DeviceOverrides"

I added the following keys for each of the Hardware ID's and Compatible ID's of the VHD listed below.

SCSI\DiskMsft____Virtual_Disk____1.0_
SCSI\DiskMsft____Virtual_Disk____
SCSI\DiskMsft____
SCSI\Msft____Virtual_Disk____1
Msft____Virtual_Disk____1
GenDisk

Replaced the "\" with "#". So for example I made the following keys,

Below is the following keys I entered:
I did the above for each single "Hardware Ids" for the VHD.

After doing this, It removed the individual entries for each VHD for example both VHD had their own category in Safely Remove Hardware listed below:

After adding the DeviceOverride keys for the hardware Ids of the VHD, It has only recategorized the VHD and it is still removeable,

Under Safely Remove hardware it displays the following:

Does Anyone else know a way to prevent a VHD from being removed/disconnected.

Can't remove/hide "Safely remove hardware" because people frequently bring their own personal USB devices.

Any help would be much appreciated.

Thanks,