Now, my procedure is as follows: Code: 1) md "<Windows_PE_Path>" 2) md "<Windows_PE_Path>\x32-x64\Media" 3) md "<Windows_PE_Path>\ISO" 4) copype x86 "<Windows_PE_Path>\x32" 5) copype amd64 "<Windows_PE_Path>\x64" 6) MakeWinPEMedia /ISO "<Windows_PE_Path>\x32" "<Windows_PE_Path>\ISO\Windows_PE_x32.iso" 7) MakeWinPEMedia /ISO "<Windows_PE_Path>\x64" "<Windows_PE_Path>\ISO\Windows_PE_x64.iso" 8) robocopy "<Windows_PE_Path>\x32\fwfiles" "<Windows_PE_Path>\Boot_files" 9) rd "<Windows_PE_Path>\x32" /s /q 10) rd "<Windows_PE_Path>\x64" /s /q 11) powershell Mount-DiskImage -ImagePath "<Windows_PE_Path>\ISO\Windows_PE_x32.iso" 12) powershell Get-DiskImage -ImagePath "<Windows_PE_Path>\ISO\Windows_PE_x32.iso" ^| Get-Volume 13) robocopy <Drive_Letter>:\ "<Windows_PE_Path>\x32-x64\Media" /e /a-:R 14) powershell Dismount-DiskImage -ImagePath "<Windows_PE_Path>\ISO\Windows_PE_x32.iso" 15) ren "<Windows_PE_Path>\x32-x64\Media\sources\boot.wim" boot_x32.wim 17) powershell Mount-DiskImage -ImagePath "<Windows_PE_Path>\ISO\Windows_PE_x64.iso" 18) powershell Get-DiskImage -ImagePath "<Windows_PE_Path>\ISO\Windows_PE_x64.iso" ^| Get-Volume 19) robocopy <Drive_Letter>:\sources "<Windows_PE_Path>\x32-x64\Media\sources" boot.wim /a-:R 20) ren "<Windows_PE_Path>\x32-x64\Media\sources\boot.wim" boot_x64.wim 21) robocopy <Drive_Letter>:\EFI\Boot "<Windows_PE_Path>\x32-x64\Media\EFI\Boot" bootx64.efi /a-:R 22) powershell Dismount-DiskImage -ImagePath "<Windows_PE_Path>\ISO\Windows_PE_x64.iso" 23) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" | find "device" 24) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /set {default} description "<Windows_PE_x32_name>" 25) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /copy {default} /d "Windows_PE_x64_name>" 26) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /set {default} device "ramdisk=[boot]\sources\boot_x32.wim,<Options_ID>" 27) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /set {default} osdevice "ramdisk=[boot]\sources\boot_x32.wim,<Options_ID>" 28) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /set <Windows_PE_x64_ID> device "ramdisk=[boot]\sources\boot_x64.wim,<Options_ID>" 29) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /set <Windows_PE_x64_ID> osdevice "ramdisk=[boot]\sources\boot_x64.wim,<Options_ID>" 30) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\Boot\BCD" /set {bootmgr} displaybootmenu true 31) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /set {default} description "<Windows_PE_x32_name>" 32) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /copy {default} /d "Windows_PE_x64_name>" 33) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /set {default} device "ramdisk=[boot]\sources\boot_x32.wim,<Options_ID>" 34) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /set {default} osdevice "ramdisk=[boot]\sources\boot_x32.wim,<Options_ID>" 35) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /set <Windows_PE_x64_ID> device "ramdisk=[boot]\sources\boot_x64.wim,<Options_ID>" 36) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /set <Windows_PE_x64_ID> osdevice "ramdisk=[boot]\sources\boot_x64.wim,<Options_ID>" 37) bcdedit /store "<Windows_PE_Path>\x32-x64\Media\EFI\microsoft\boot\BCD" /set {bootmgr} displaybootmenu true 38) robocopy "<Windows_PE_Path>\Boot_files" "<Windows_PE_Path>\x32-64\fwfile" 39) MakeWinPEMedia /iso "<Windows_PE_Path>\x32-x64" "<Windows_PE_Path>\ISO\Windows_PE_x32-x64.iso" 40) isoburn /Q <Drive_Letter>: "<Windows_PE_Path>\ISO\Windows_PE_x32-x64.iso" Windows PE 32/64 bit works properly with computers that have the BIOS; while with those that have the UEFI, the CD does not boot and the screen remains black. Why? Thanks Bye
After several attempts on different computer, I noticed that the only case in which the computer does not boot from my CD is the one in which this computer is a 64 bit with the UEFI. So, how do I solve this problem ie how do I make this CD so that it starts even with the 64 bit computers with UEFI? Thanks Bye