I installed Win8 Pro by booting into Win PE and then running a Diskpart script and a Batch file. Code: rem == CreatePartitions-UEFI.txt == rem == These commands are used with DiskPart to rem create five partitions rem for a UEFI/GPT-based PC. rem Adjust the partition sizes to fill the drive rem as necessary. == select disk 0 clean convert gpt rem == 1. Windows RE tools partition =============== create partition primary size=300 format quick fs=ntfs label="Windows RE tools" assign letter="T" set id="de94bba4-06d1-4d40-a16a-bfd50179d6ac" gpt attributes=0x8000000000000001 rem == 2. System partition ========================= create partition efi size=100 rem ** NOTE: For Advanced Format 4Kn drives, rem change this value to size = 260 ** format quick fs=fat32 label="System" assign letter="S" rem == 3. Microsoft Reserved (MSR) partition ======= create partition msr size=128 rem == 4. Windows partition ======================== rem == a. Create the Windows partition ========== create partition primary rem == b. Create space for the recovery image === shrink minimum=15000 rem ** NOTE: Update this size to match the size rem of the recovery image ** rem == c. Prepare the Windows partition ========= format quick fs=ntfs label="Windows" assign letter="W" rem === 5. Recovery image partition ================ create partition primary format quick fs=ntfs label="Recovery image" assign letter="R" set id="de94bba4-06d1-4d40-a16a-bfd50179d6ac" gpt attributes=0x8000000000000001 list volume exit Applyimage.bat Code: rem These commands copy the selected image file to rem predefined hard disk partitions on a UEFI-based computer. rem Usage: ApplyImage WimFileName rem Example: ApplyImage E:\Images\ThinImage.wim rem === Copy the image to the recovery image partition ======================= mkdir R:\RecoveryImage copy %1 R:\RecoveryImage\install.wim rem === Apply the image to the Windows partition ============================= dism /Apply-Image /ImageFile:R:\RecoveryImage\install.wim /Index:1 /ApplyDir:W:\ rem === Copy the Windows RE Tools to the Windows RE Tools partition ========== md T:\Recovery\WindowsRE attrib -a -s -h W:\windows\system32\recovery\winre.wim copy W:\windows\system32\recovery\winre.wim T:\Recovery\WindowsRE\winre.wim rem === Copy boot files from the Windows partition to the System partition === bcdboot W:\Windows rem === In the System partition, set the location of the Windows partition === W:\Windows\System32\reagentc /setosimage /path R:\RecoveryImage /target W:\Windows /index 1 rem === In the System partition, set the location of the WinRE tools ========= W:\Windows\System32\reagentc /setreimage /path T:\Recovery\WindowsRE /target W:\Windows /bootkey 0x3d00 Win8 Was loaded successfully, however in Settings->General, the Refresh my PC and Reset my PC would not work. When trying Refresh my PC it says the windows drive is locked and i need to unlock it first. When trying Resetting my PC, it says "Unable to Reset your pc. A required drive partition is missing". It is a HP Envy m6 laptop with UEFI. When I enable Legacy Mode in BIOS and using the same method to load Win8, the Reset my PC functions correctly. But it fails when i disable "Legacy mode" to use UEFI only. Can anyone enlighten me on this issue? Any comment is appreciated. Thanks.