In the dropdown, ensure it is set to an available device or specifically pointed to the Windows 11 ISO file you downloaded. 2. Switch to Manual Installation
If you are installing on physical hardware, use the Rufus tool . It allows you to check boxes for "unattended" options (like bypassing TPM or creating local accounts) directly on the bootable USB, which avoids the need for a separate unattended.iso . windows 11 cannot connect unattendediso to cd dvd 2 better
| Cause | Description | |-------|-------------| | | Windows 11’s native mounting may reject ISO 9660 extensions or UDF versions older/newer than supported. | | Virtual drive letter conflict | Drive “2” may be mapped to a disconnected network drive or reserved letter. | | Corrupted ISO structure | Unattended ISOs built with some tools (e.g., NTLite, OSDBuilder) can produce non‑standard boot sectors. | | Third‑party driver conflict | Virtual CD software (Daemon Tools, PowerISO) may block native Windows mounting. | | Group Policy restriction | “Access to CD/DVD drives” may be disabled for standard users. | | VM configuration issue | In VMware/VirtualBox, the virtual DVD drive must be set to “Connected” and point to a valid ISO path. | In the dropdown, ensure it is set to