Эта тема содержит интересные ссылки по вопросу Win7_PE.vhd (см. пост 63 и далее), включая нативную загрузку с USB диска.
The VHD image loads two drivers:
"Boot Bus Extender" vdrvroot.sys
"SCSI miniport" vhdmp.sys
Код: [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\Root#VDRVROOT]
"ClassGUID"="{4d36e97d-e325-11ce-bfc1-08002be10318}"
"Service"="vdrvroot"
"DriverPackageId"="machine.inf_x86_neutral_ad27c646df44cc38"
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\vdrvroot]
"Start"=dword:00000000
"Type"=dword:00000001
"ErrorControl"=dword:00000003
"ImagePath"=hex(2):73,79,73,74,65,6d,33,32,5c,44,52,49,56,45,52,53,5c,76,64,72,\
76,72,6f,6f,74,2e,73,79,73,00
"Group"="Boot Bus Extender"
"DriverPackageId"="machine.inf_x86_neutral_ad27c646df44cc38"
"Tag"=dword:00000006
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\{8e7bd593-6e6c-4c52-86a6-77175494dd8e}#MsVhdHba]
"ClassGUID"="{4d36e97b-e325-11ce-bfc1-08002be10318}"
"Service"="vhdmp"
"DriverPackageId"="vhdmp.inf_x86_neutral_c04e370113042d2c"
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\vhdmp]
"Start"=dword:00000003
"Type"=dword:00000001
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):73,79,73,74,65,6d,33,32,5c,44,52,49,56,45,52,53,5c,76,68,64,\
6d,70,2e,73,79,73,00
"Group"="SCSI miniport"
"DriverPackageId"="vhdmp.inf_x86_neutral_c04e370113042d2c"
"BootFlags"=dword:00000002
"Tag"=dword:00000040