Select instead of choosing the ISO right away during the initial wizard.
– In Windows, you don’t “connect” an ISO to a physical drive number (like “CD/DVD 2”). Instead, you:
entirely. Windows setup finds the file automatically in the root folder. Rufus USB windows 11 cannot connect unattendediso to cd dvd 2 better
Fixing Windows 11 "Cannot Connect UnattendedISO to CD/DVD 2" Error
Root cause possibilities (ranked)
Here is a comprehensive guide to understanding, debugging, and fixing this issue. What Causes the UnattendedISO Connection Failure?
Some older unattended scripts struggle with UEFI/UDF handshakes; legacy BIOS mode can sometimes bypass the mount error. 3. Troubleshooting Core Causes Select instead of choosing the ISO right away
Corrupted legacy filters in the Windows registry frequently cause hardware recognition failures. Press Win + R , type regedit , and hit . Navigate precisely to the following path:
(or 2) and manually point it to your Windows 11 installation ISO. If the unattended.iso Windows setup finds the file automatically in the