Using the Get mountpoints PowerShell Module for CIMFS.

You can install the MSI for get-mountpoints from the install location of MSIXAACT.

Once installed.

You should be able to use the Get-mountpoints cmdlet and the Get-cims cmdlet.

The get-mountpoints cmdlet output looks like this.

The only problem with this is, You cannot see the volume guid od mounted cims with drive letters.

When using get-cims cmdlet this shows the volume guid to enable you to unmount using the cimmount cli tool or the gui.