Bootcamp Windows 10 inaccessible boot device

Hello


i have the same problem as like

https://discussions.apple.com/thread/250426433


any ideas or update


Thanks for your help

br



Posted on Apr 19, 2021 2:13 PM

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27 replies

Apr 21, 2021 5:54 AM in response to Stone44Play

Stone44Play wrote:

The waiting wheel is spinning but than the bsod will appear.
The strange thing is that on the other Win10 installation the wheel turns three times then the connected usb stick blinks on the led.

On the old windows installation the wheel is spinning about 12 times the bsod appears.

The BIOS and UEFI installation will behave differently. Comparing them is not a very good idea. The Device list is very different.

Apr 21, 2021 6:07 AM in response to Stone44Play

bcdedit


Windows Boot Manager

--------------------

identifier {bootmgr}

device partition=\Device\HarddiskVolume2

path \EFI\Microsoft\Boot\bootmgfw.efi

description Windows Boot Manager

locale en-us

inherit {globalsettings}

default {default}

resumeobject {e80587a2-a2e1-11eb-90b9-8cd797bd8242}

displayorder {default}

toolsdisplayorder {memdiag}

timeout 30


Windows Boot Loader

-------------------

identifier {default}

device partition=C:

path \Windows\system32\winload.efi

description Windows 10

locale en-us

inherit {bootloadersettings}

isolatedcontext Yes

allowedinmemorysettings 0x15000075

osdevice partition=C:

systemroot \Windows

resumeobject {e80587a2-a2e1-11eb-90b9-8cd797bd8242}

nx OptIn

bootmenupolicy Standard


--------------------------------------------------------------------------------------


C:\Boot>bcdedit /store c:\boot\bcd


Windows Boot Manager

--------------------

identifier {bootmgr}

device partition=C:

description Windows Boot Manager

locale en-us

inherit {globalsettings}

default {default}

resumeobject {369be5dc-a108-11eb-ba8f-7cd1c38b0475}

displayorder {default}

{72297638-6794-11eb-b68a-406c8f57d833}

toolsdisplayorder {memdiag}

timeout 30


Windows Boot Loader

-------------------

identifier {default}

device partition=C:

path \windows.office\system32\winload.exe

description Windows 10

locale en-us

inherit {bootloadersettings}

allowedinmemorysettings 0x15000075

osdevice partition=C:

systemroot \windows.office

resumeobject {369be5dc-a108-11eb-ba8f-7cd1c38b0475}

nx OptIn

bootmenupolicy Standard


Windows Boot Loader

-------------------

identifier {72297638-6794-11eb-b68a-406c8f57d833}

device unknown

path \WINDOWS\system32\winload.exe

description Windows 10

locale en-US

inherit {bootloadersettings}

allowedinmemorysettings 0x15000075

osdevice unknown

systemroot \WINDOWS

resumeobject {72297637-6794-11eb-b68a-406c8f57d833}

nx OptIn

bootmenupolicy Standard

Apr 25, 2021 4:06 AM in response to Loner T

Hello


next problem. For test purposes i create a clone disk from the build in SSD via usb to an external drive.


i format the SSD an try to install osx new without luck. Then i try to clone back from the external drive to original SSD. All partitions are present but i cannot boot now osx and windows. Only see on startup an EFI icon.


The very strange thing is that when i put the external clone disk into the MB via sata i see on startup an EFI and Macintosh icon and can only boot osx.


OMG please help me out.

Apr 25, 2021 4:20 PM in response to Stone44Play

Stone44Play wrote:

Now i will install windows over BC but i only can install win10 within the installer and no win7

macOS High Sierra and newer versions do not support a new installation of W7. However, you may be able to replace the DVD after the first boot using a W7 if you use the Alt/Option key, instead of W10 DVD. The other option is to first install Sierra, install W7, and then upgrade to High Sierra. High Sierra has many issues with APFS, and personally, I prefer Sierra over High Sierra.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Bootcamp Windows 10 inaccessible boot device

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