reg load HKLM\PE-SYS c:\Winpe\Mount\Windows\system32\config\system Reg Add "HKLM\PE-SYS\ControlSet001\Services\vds\Alignment" /t Reg_Dword /v LessThan4GB /d 0 /f Reg Add "HKLM\PE-SYS\ControlSet001\Services\vds\Alignment" /t Reg_Dword /v Between4_8GB /d 0 /f Reg Add "HKLM\PE-SYS\ControlSet001\Services\vds\Alignment" /t Reg_Dword /v Between8_32GB /d 0 /f Reg Add "HKLM\PE-SYS\ControlSet001\Services\vds\Alignment" /t Reg_Dword /v GreaterThan32GB /d 0 /f reg unload HKLM\PE-SYS This code is meant to be used when building your winpe2 image, not once the Winpe2 has loaded into memory. To run this code once winpe2 is up and running, run this code: Reg Add "HKLM\CurrentControlSet\Services\vds\Alignment" /t Reg_Dword /v LessThan4GB /d 0 /f Reg Add "HKLM\CurrentControlSet\Services\vds\Alignment" /t Reg_Dword /v Between4_8GB /d 0 /f Reg Add "HKLM\CurrentControlSet\Services\vds\Alignment" /t Reg_Dword /v Between8_32GB /d 0 /f Reg Add "HKLM\CurrentControlSet\Services\vds\Alignment" /t Reg_Dword /v GreaterThan32GB /d 0 /f I saw your exact problem back in December, but after using this method I have not seen it on any systems since. There is also a hotfix released by microsoft for this issue. I'll post the number on Monday, don't have it here.