How do I get rid of Windows warning box when installing drivers?
The warning message is shown when the plug-n-play device driver (which is part of CallbackDisk driver set) is installed. If you install drivers in non-PnP mode (this is controlled by the corresponding parameter of Install method) the warning message is not shown. Note: that if you don't install PnP driver, you won't be able to use stDiskPnP mode for the drive.
stDiskPnP mode is needed for Recycle Bin to work and for several other functions (possibility to "Eject" the disk, making disk visible in Microsoft Management Console, also some applications work only with local disks visible in PnP mode).