Step 1: Remove the Ghost “CD/DVD 2” Drive Open Device Manager (right-click Start button > Device Manager). Expand DVD/CD-ROM drives. If you see a grayed-out or faded “CD/DVD 2,” right-click it and select Uninstall device. Reboot Windows 11.
Step 2: Mount the ISO Directly Without UnattendedISO Navigate to your ISO file. Right-click it and select Mount. Windows 11 will assign it the next available drive letter (e.g., “D:” or “E:”). Note: It will NOT be “CD/DVD 2” yet – that’s fine. windows 11 cannot connect unattendediso to cd dvd 2 better
Step 3: Force “CD/DVD 2” Using PowerShell Open PowerShell as Administrator (search “PowerShell” > right-click > Run as Administrator). Run the following commands: Step 1: Remove the Ghost “CD/DVD 2” Drive
# List all mounted virtual disks
Get-DiskImage | Get-Volume
If the error persists, the hypervisor's Secure Boot verification may be rejecting the secondary ISO signature. Run the following commands:
Run the following commands:
net stop imapi
net start imapi
| Cause | Description |
|-------|-------------|
| Driver incompatibility | UnattendedISO relies on older filter drivers (e.g., ElbyCDIO, VClone) that are not WHQL-signed for Windows 11 22H2/23H2/24H2. |
| Virtual drive software conflict | “CD/DVD 2 Better” may conflict with Windows 11’s native ISO mounting (PowerISO, Daemon Tools Lite, or Windows built-in). |
| UnattendedISO generation error | The ISO created lacks proper UDF/ISO9660 formatting or boot catalog – Windows 11’s virtual DVD driver rejects it. |
| Group Policy / security restrictions | Windows 11 may block legacy SCSI pass-through commands required by some virtual drive tools. |
| Hyper-V / Device Guard | Enabling Hyper-V or Core Isolation (Memory Integrity) can prevent direct hardware access for legacy CD emulation. |