Why does the “Open device failed” window appear during the DVD-Cloner XR for Mac copy process?¶

The "Open device failed" error in DVD-Cloner XR , it's typically due to drive occupation or compatibility issues.

Common Causes

Drive Occupation: The optical drive is being used by another process when DVD-Cloner XR attempts to access it
Cross-Generation Compatibility: Older drives may have timing conflicts with modern macOS systems
Resource Conflicts: Multiple applications attempting to access the same drive simultaneously
Drive Communication: Legacy drives may need special handling by the XceedRead™ engine

Recommended Solutions

Method 1: Adjust I/O Settings (Recommended)

Open DVD-Cloner XR for Mac Preferences
Set "Read I/O" to "File IO" mode
This allows XceedRead™ to use optimized file-based reading for better compatibility

Method 2: Two-Step Copy Process

First, Copy the disc content to your hard drive save as ISO file using DVD-Cloner XR for Mac
Then burn the saved content to a blank disc
This method completely eliminates drive occupation conflicts

For disc collectors with various drive types, XceedRead™ technology minimizes device conflicts and provides reliable copying regardless of your optical drive's age or brand.

Contents

Why does the “Open device failed” window appear during the DVD-Cloner XR for Mac copy process?¶

Common Causes

Recommended Solutions