Please install DAEMON Tools Lite
Currently you don't have access to DAEMON Tools Lite features because this software is not installed on your PC.

To make features available via DAEMON Tools Toolbar download for personal non-commercial use or buy the virtual CD/DVD-ROM emulator.
After installation you will have access via toolbar "DAEMON Tools Lite" buttons to:
Unmount all

Unmount images from the all virtual drives.
Mount image

Mount selected image to the first virtual drive.