FAT32 has a 4 GB file size limit. Since install.wim often exceeds this, you must split it for UEFI bootable USBs.
Since Microsoft now distributes consumer ISOs with install.esd instead of .wim , you must convert it using (Deployment Imaging and Servicing Management) – a built-in Windows tool. download install.wim file for windows 11
You are trying to mount an install.esd directly. Convert it to .wim first using Method 3. FAT32 has a 4 GB file size limit
A: boot.wim is the Windows Preinstallation Environment (WinPE) used to start setup. install.wim contains the actual OS. download install.wim file for windows 11
Open and use DISM: