You need to install two separate packages from Microsoft in the following order:
Open the as an administrator from your Start menu. winpe 11 install
: Boot into WinPE to use diskpart for managing partitions or DISM to repair an offline Windows image [22, 23]. You need to install two separate packages from
Insert the second USB with Windows 11 files. In WinPE, it might get a new letter – find it with: winpe 11 install
Note: FAT32 is required for UEFI boot. If your customized WinPE grows beyond 4GB, you will need a two-partition strategy (FAT32 boot partition + NTFS data partition).