DL2GO hidding the original drive letter
After mounting the stick with DL2Go the original letter should be hidden and there should be no windows error, because this is confusing for the user.
An internal Feature Request was created and was send to the development team for investigation.
Jan Reinders commented
You can change the policy for the Stickletter (the original letter) from Acces not allowed in Read-only for the Domain User group, or even the group Authenticated User so that Windows does not break in the drivelock denial with the disadvantage that they SEE the container file (DLV) and other files what a normal user mostly will not understand, but it is better than the error. So it is a good remark from the customer Winklhofer, the interface of DL2GO has more of these little shortcomings for years.