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Run the "Windows 7 USB 3.0 Creator Utility" and open boot.wim at 7-zip next. Does exist \Windows\system32\drivers\iusb3xhc.sys and iusb3hub.sys? If not then, integrate the "Windows 7 USB 3.0 Creator Utility" drivers manually. dism.exe /Mount-WIM /WimFile:"U:\sources\install.wim" /index:3 /MountDir:"C:\ISO\MOUNT" dism.exe /image:"C:\ISO\MOUNT" /Add-Driver /driver:"F:\Win7_USB3.0_Creator_v3\USB_Drivers\x64" /ForceUnsigned /recurse dism.exe /image:"C:\ISO\MOUNT" /Get-Drivers /Format:Table dism.exe /Unmount-wim /mountdir:"C:\ISO\MOUNT" /commit Two drivers are added: x64\iusb3hub.inf and x64\iusb3xhc.inf dism.exe /Mount-WIM /WimFile:"U:\sources\boot.wim" /index:2 /MountDir:"C:\ISO\MOUNT" dism.exe /image:"C:\ISO\MOUNT" /Add-Driver /driver:"F:\Win7_USB3.0_Creator_v3\USB_Drivers\x64" /ForceUnsigned /recurse dism.exe /image:"C:\ISO\MOUNT" /Get-Drivers /Format:Table dism.exe /Unmount-wim /mountdir:"C:\ISO\MOUNT" /commit[/CODE] Do you have more testing USB sticks? There are native MMC and SD drivers at Windows 7. However these drivers are older than eMMC, eMMC is not supported. May work or fail, it's a long shot.

The situation is unclear. Is Disk 0 the eMMC disk? Then iaiosd can find the disk, but diskpart.exe is confused, a list detail should work and a list par should find existing partittions. Strange. A clean could work and clean the disk, Win 8.1 is gone. Not a good idea currently. Windows 7 installation is questionable still. Or Disk 0 is a ghost disk. Jumping to USB boot next? This may help do solve the eMMC controller driver riddle. There is a "Windows 7 USB 3.0 Creator Utility". Let's try this one, there are different drivers included. https://downloadcenter.intel.com/download/25476/Windows-7-USB-3-0-Creator-Utility Read Win7-USB3.0-Creator-Readme-v3.pdf page 1, 1. Create a USB flash drive installer 2. Run the Utility Boot boot.wim from this created USB flash drive. Does diskpart.exe list the USB flash drive?

There is no working driver at default windows 7 install.wim for the eMMC storage controller. A BSOD is very likely. Currently there is no known working driver at all.

Replace the privious file. Start using a original iaiosd.inf, This is part of the original file, %iaiosd.DeviceDesc%=iaiosd_Device, PCI\VEN_8086&DEV_0F16 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PCI\VEN_8086&DEV_0F50 Insert the addional lines after PCI\VEN_8086&DEV_0F16 to get the result %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PCI\VEN_8086&DEV_0F14 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, ACPI\VEN_8086&DEV_0F14 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, ACPI\PNP0D40 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PCI\PNP0D40 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PNP0D40 As for testing, it's about boot.wim so far. Take small steps. Boot the edited boot.wim. Does diskpart.exe detect the eMMC now?

No, there is a difference: iaiosd.inf refers a iaiosd_Device and a iaioeMMC_Device: %iaiosd.DeviceDesc%=iaiosd_Device, PNP0D40 is not %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PNP0D40 This enable the parameter EMMCBoot. Try the iaioeMMC_Device.

That's bad news: most likely a BSOD 0x7b missing boot device. Native USB boot approach failed: driver, BIOS CSM oder timing issue. Timing issue could be resolved at Start=0 and group setting. Difficult to debug. But reviewing previous behaviour, we are jumping back to the eMMC approach: There was no micro SD Card without iaiosd.sys. There is a micro SD Card with iaiosd.sys. iaiosd.inf refers a iaiosd_Device and a iaioeMMC_Device. Let's try the eMMC one, I should have prefered this initially. [INTEL.NTx86] ;Baytrail %iaiosd.DeviceDesc%=iaiosd_Device, PCI\VEN_8086&DEV_0F16 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PCI\VEN_8086&DEV_0F14 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, ACPI\VEN_8086&DEV_0F14 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, ACPI\PNP0D40 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PCI\PNP0D40 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PNP0D40 %iaioeMMC.DeviceDesc%=iaioeMMC_Device, PCI\VEN_8086&DEV_0F50 Can you create a new boot.wim? And be aware to use ForceUnsigned. Does diskpart list the eMMC disk now?

Yes, Win7 on an external disk: on the USB WD Elements. No, not wintousb: this dosn't support Intel USB 3.0 driver stack. Follow given suggestions, especial the fix_USB3_SD.cmd command. This set Intel USB 3.0 driver bootable stack.

I would create a RAW image anyway. Better to be safe. The Windows 7 diskpart did not list the WD disk. Did you connect the WD passport at all? A driver package to the eMMC is missing still. So try USB first, then validate driver to the eMMC from running Windows 7. Try install Windows 7 x86 to the USB WD elements.

Sorry for the confusion, currently both eMMC and USB 3.0 are a target. Let's jump to USB 3.0 boot then. I understand: the Lexar USB works, the WD USB dosn't work. Most likely the Lexar USB is a removable disk and the WD USB a fixed disk. Do you have another fixed USB disk? Try another fixed USB disk. Does diskpart list this disk? Backup the files, w'll clean the USB disk. As for intermedia testing, you may try the Lexar USB too. Should survive first boot. Boot Windows 8.1, Z:\sources\install.wim : default Windows 7 install file C:\drivers\Win7_x86\USB3 : Windows 7 USB3 drivers diskpart.exe list disk sel disk Number detail disk clean create par prim format fs ntfs quick active assign letter=U exit DISM.exe /Apply-Image /ImageFile:Z:\sources\install.wim /Index:3 /ApplyDir:U:\ bcdboot.exe U:\Windows /s U: /f BIOS Dism.exe /image:U:\ /Add-Driver /driver:C:\drivers\Win7_x86\USB3 /recurse /ForceUnsigned Dism.exe /image:U:\ /Get-Drivers /Format:Table fix_USB3_SD.cmd U:\Windows fix_USB3_SD.zip

Thanks for the explanation. This matches to the diskpart view: no partitons listed. Wimboot is a special feature. I doubt windows system image, may work or fail. Or restore to a non wimboot configuration. https://msdn.microsoft.com/en-us/library/dn594399.aspx Do you have another USB stick, different size, e.g. 16gb? Does Disk 0 list a 16 gb media, given a empty card reader? Do you have a micro sd card? Can you insert the sd card? Does diskpart list the sd card? A raw image is the basic approach. Works more likely that way. Try dsfo, should run at a Windows 8 installation media. And convert the image to VHD image using clonedisk. Then mount the VHD image at Windows 8.1 disk manager. There should be a new GPT disk with several partitions. Added: HP PCs - Creating WIMboot recovery media http://support.hp.com/ee-en/document/c04487758

You cannot install 32-bit win7 in UEFI mode, but you can install 32-bit win7 in CSM mode. Your machine offers this choice. And the machine does not offer a USB 2.0 port, the documentation is misleading. There are USB 3.0 ports only. Strange still: Disk 0 29 GB 29 GB free If this is the windows 8.1 UEFI disk, then diskpart should list several partitions. One FAT32 EFI, a MSR, a wimboot OS one and a recovery with install.wim and a custom.wim. Make a disk image first: Clonedisk can do this. http://labalec.fr/erwan/?page_id=42 Do you have a WinPE available? Backup a raw disk image. No idea, which raw image program works from a Windows 8.1 install media, shift F10 command console. I'll search. Do not continue Windows 7 so far. The final result is uncertain and may fail. Restoring Windows 8 to a clean disk is the next task. Continue Windows 7 then: http://h10032.www1.hp.com/ctg/Manual/c04501162 Spare part number 792785-001: System board equipped with an Intel Celeron N2840 processor with 2 GB system memory, 32 GB eMMC hard drive, and the Windows 7 or non-Windows operating systems (includes thermal grease and thermal pads) Spare part number 792785-501: System board equipped with an Intel Celeron N2840 processor with 2 GB system memory, 32 GB eMMC hard drive, and the Windows 8.1 Standard operating system (includes thermal grease and thermal pads Some driver hints: Start at laptop manufacturer offer for Windows 8.1 http://support.hp.com/us-en/drivers/selfservice/HP-Stream-13-Notebook-PC/7372147/model/7527435 E.g. Intel Chipset Installation Utility and Driver Run 7-zip, extract sp69111.exe. View the files. There is a folder \WIN7. Make preddy good guess: this chipset driver package works at Windows 7 too. Play a game: Try all HP Stream Notebook - 13-c004tu Windows 8.1 drivers. First the Chipset driver. Next Intel Embedded Drivers for Windows 7 https://downloadcenter.intel.com/download/24548/ Add the rest HP drivers. View the device manager now. What's yellow marked? Read the HardareID and the Compatible ID. E.g. the USB 3.0 controller is not installed.

@Tsundere Yes, list dispart disk details. sel disk 0 det disk list par sel disk 1 det disk list par list vol Break, this looks suspicious: Disk 0 29 GB 29 GB free Disk 1 29 GB 0 GB free Are Disk 0 and Disk 1 equal? Are there two disks?

That's strange. The device is connected to a USB 3.0 controller. A USB 2.0 port should be connected to a USB 2.0 controller. Strange HP? Include Intel USB 3.0 drivers to boot.wim image 2. https://downloadcenter.intel.com/de/download/22824 Version 4.0.4.51 contains %IUsb3XhcDeviceDesc01% = IUsb3XhcModel, PCI\VEN_8086&DEV_0F35, hence they should match. Boot boot.wim. Does diskpart.exe detects different USB disks now?

Why did you add drivers to install.wim initially? The pdf describes to boot from boot.wim and load driver iaosd.sys manually. This failed. If you integrate the driver to boot.wim, then the driver is loaded automatically. May be a timing isssue. Then you don't have to load the driver manually. Scroll back two days ago, there is a device manager picture: Intel USB 3.0 controller. List the USB 3.0 controller HardwareID. Does device manager list USB 3.0 controller, if no USB 3.0 port is used? Did you connect the WD to USB 3.0 port or USB 2.0 port making the picture? Make another picture, if a USB disk is connected to USB 2.0 only. WD SES device is strange, parallel to WD My Passport. Should not matter, but it's about booting: try another USB disks too.

Windows setup are loaded from the file boot.wim Slipstream the drivers to boot.wim. Is the wireless mouse/keyboard connected to a USB port? Can you disable the xhci mode at UEFI/CSM, to disable USB 3.0 mode? Try slipstream the USB 3.0 drivers too. The drivers goes to boot.wim and to install.wim. The real cuplrit can be the UEFI/CSM.

That's an Intel chipset without a USB 3.0 controller. There is an additional NEC USB controller. NEC does provide XP 32-bit and XP 64-bit drivers. USB 3.0 in an of itself works on XP, both XP 32-bit and XP 64-bit.

User Guide for Windows 7 IO Atom E3800 MR4_PUBLIC.pdf 2.3.8 How to Install Windows 7 32-bit into SD and eMMC Storage Devices 2.3.9 How to Install Windows 7 64-bit on to SD and eMMC storage devices Use section 2.3.8. Windows 7 32-bit works with default boot.wim. Try this at CSM first. Be aware: this is exprimental, neither hardware manufactuer nor operating manufacturer supports this. Edit iaiosd.inf in addition, insert the hardare id [INTEL.NTx86] ;Baytrail %iaiosd.DeviceDesc%=iaiosd_Device, PCI\VEN_8086&DEV_0F16 %iaiosd.DeviceDesc%=iaiosd_Device, PCI\VEN_8086&DEV_0F14 %iaiosd.DeviceDesc%=iaiosd_Device, ACPI\VEN_8086&DEV_0F14 %iaiosd.DeviceDesc%=iaiosd_Device, ACPI\PNP0D40 %iaiosd.DeviceDesc%=iaiosd_Device, PCI\PNP0D40 %iaiosd.DeviceDesc%=iaiosd_Device, PNP0D40 Next step: Windows 7 64-bit works with edited boot.wim. Try both CSM and UEFI mode.

Well, diskpart.exe should list the disk first. WinNTSetup won't detect a disk too, don't try this currently. Just curious: did you used a USB 2.0 port? Next idea: integrate Intel USB 3.0 drivers to Windows 7 boot.wim, and use a USB 3.0 port. Add and Remove Drivers to an Offline Windows Image: https://technet.microsoft.com/en-us/library/hh825070.aspx Does diskpart.exe find a disk now? Or: Attach a USB drive to the USB 2.0 port. Open windows 8 device manger, change view 'Devices per connection'. Navigate to your USB drive. Which parent devices are listed between the USB drive and the pci bus? There is a details tab at device manger: can you list the HardareID, CompatibleID and inf name of each device?

Which part dosn't detect a USB drive? Does Windows 7 diskpart list a device? Windows 7 setup won't detect a USB drive. Use another approach: WinNTSetup and enable native USB Windows 7

Technically, you don't need drivers for the emmc, it's a disk: windows provides drivers for the disk. However you neeed driver for the controller and bus. HP Stream Notebook PC 13 Maintenance and Service Guide http://h10032.www1.hp.com/ctg/Manual/c04501162 http://binarydb.com/driver/Intel(R)-Celeron(R)%2FPentium(R)-Storage-Control-Cluster--_-_-0F14-263046.html Device class: SDHost Services: sdbus HardwareIDs: ACPI\VEN_8086&DEV_0F14 ACPI\80860F14 *80860F14 CompatibleIDs: ACPI\PNP0D40 PNP0D40 PNP0D40 is a HardwareID newly created for use with SoC platforms. https://msdn.microsoft.com/en-us/windows/hardware/drivers/bringup/device-management-namespace-objects http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/devids.txt PNP0D40 SDA Standard Compliant SD Host Controller Windows 8 sdbus.inf [Generic.NTx86] %PCI\CC_080500.DeviceDesc%=SDHost, PCI\CC_080500 %PCI\CC_080501.DeviceDesc%=SDHost, PCI\CC_080501 %ACPI\PNP0D40.DeviceDesc%=SDHost, ACPI\PNP0D40 [Intel.NTx86] %ACPI\VEN_8086&DEV_0F14%=SDHostIntelBayTrail, ACPI\VEN_8086&DEV_0F14 Windows 7 Embedded supports SD boot: http://download.microsoft.com/download/3/4/C/34CD624B-DFB9-44A8-92C0-4F9CF3678523/WE-Standard7-Datasheet-final.pdf SD Boot with Windows Embedded Standard SP1. A Windows 7 sdbus.inf dosn't list a PNP0D40, there is no generic Windows 7 driver. Windows 7 default driver sdbus.sys may work at a PNP0D40. Or the driver may fail. Intel Embedded Drivers for Windows 7 https://downloadcenter.intel.com/download/24548/ A Celeron N2930 is supported. That's almost a Celeron N2840. iaiosd.inf [INTEL.NTx86] ;Baytrail %iaiosd.DeviceDesc%=iaiosd_Device, PCI\VEN_8086&DEV_0F16 iaiosd.DeviceDesc = "Intel(R) Atom(TM)/Celeron(R)/Pentium(R) Processor SD Host Controller" PCI\VEN_8086&DEV_0F16 dosn't match ACPI\VEN_8086&DEV_0F14, but both are bay trail architecture. Hence iaiosd.sys may work at given hardware. Overall: go for USB boot first try different SD drivers next: Windows 7 or Windows Embedded 7 ones if eMMc works, swap installation from USB to eMMc or go for SATA https://www.ifixit.com/Guide/HP+Stream+13+Disassembly+for+Upgrading+the+PCIe+mini+SSD/55353

I understand: windows detects a SD flash drive and uses SD card drivers. Can you verify: Open windows 8 device manger, change view 'Devices per connection'. Is the eMMc connected to a SD Host Controller and a SD Storage Class Controller?

< Intel SD Host Controller > Hardware ID: ACPI\VEN_8086&DEV_0F14 < SD Storage Class Controller > Hardware ID: SD\CLASS_MMC Does the generic HardwareID 'PCI\CC_0805' matches the SD Host Controller too? Windows 7 uses another SD driver stack, compare XP file names https://support.microsoft.com/kb/934428 A historic BartPE example http://www.911cd.net/forums//index.php?showtopic=23723 Idea: boot a Windows 8 install dvd, dism apply the windows 7 install.wim, run bcdboot include SD drivers and adjust boot settings No hardare to test, may work or fail. Back to USB boot, driver are not enabled by default. Enable them: run set_7_usb_boot.cmd http://reboot.pro/topic/14186-usb-hdd-boot-and-windows-7-sp1/#entry127772

I don't know know how to configure this. Manually: create a folder \Make_PE3\zzz_add\x86\Drivers copy driver files to \Make_PE3\zzz_add\x86\Drivers Make a 7 pe iso at MakePE3 Make another iso makebt\mkisofs.exe -v -iso-level 4 -l -joliet-long -volid "PE3" -b boot/etfsboot.com -no-emul-boot -hide boot.catalog -duplicates-once -force-uppercase -o win7pe_x86\PE3.ISO win7pe_x86\ISO zzz_add\x86 Here works a 894 MiB boot.wim at VMware Player, 1.4 GiB RAM attached to the machine. The task manager lists 1.1 GiB RAM used. A boot.wim greater 1 GIB freeze after loading to RAM. Bootmgr, ramdisk.sys or another driver are limited.

What about: write the 400MiB ISO to a cd use a addional USB sick, copy and expand the drivers to <USB stick>\drivers\ Boot the CD. Launch 'Driverpacks from folder' and select the \drivers\ folder.

Standalone WinUSB installer for XP: First: Get winusbcoinstaller2.dll It's part of Windows Driver Kit https://www.microsoft.com/en-us/download/details.aspx?id=11800 \WDK\wcoinstallers_cab001.cab Or latest_usb_driver_windows.zip http://developer.android.com/sdk/win-usb.html Run 7-zip, extract i386\winusbcoinstaller2.dll Next: Run 7-zip, expand winusbcoinstaller2.dll Run update\update.exe