: This is not a standard Windows installation ISO. It is a dynamically generated or custom ISO file created by virtualization software (like VirtualBox’s "Unattended Guest OS Install" feature) or a tool like Windows System Image Manager. It contains:
: Some hypervisors automatically create a second virtual drive for an unattended answer file. If that drive isn't properly initialized, the connection fails. windows 11 cannot connect unattended.iso to cd dvd 2
In your VM software, choose the option to manually. : This is not a standard Windows installation ISO
Remove any secondary CD/DVD drives or set them to or "Disconnect" before restarting the installation. 3. Create a Custom ISO with Rufus If that drive isn't properly initialized, the connection
If none of these solutions work, consider whether you truly need an unattended ISO. Sometimes a standard manual install plus a post-deployment PowerShell script is more reliable than wrestling with a second virtual optical drive.