When you delete a folder that is stored on a mounted drive, you receive:
Cannot delete <Folder Name>: Access is denied. The source file may be in use.
The Recycle Bin does NOT recognize mounted volumes.
To delete a folder on a mounted volume, use either of the following:
- Press SHIFT+DELETE to bypass the Recycle Bin.
- Open a CMD prompt and type:
RD /s /q <Folder Path>
(I haven't tried it yet. Still to be confirmed.)