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thevoices-0503 avatar image
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thevoices-0503 asked TeemoTang-MSFT commented

Unable to upgrade Windows 10 1909 to 2004 or 20h2

Been seeing pretty much since I built this system an issue with not being able to upgrade windows 10 past 1909. After it runs through and gets to about 70% complete reboots, has the spinning wheel then get "Boot device inaccessible" reboots trys one more time, then restores back to 1909.  in the updates this is the error code being received "Last failed install attempt on ‎3/‎9/‎2021 - 0xc1900101". I have gone through all the stuff nothing works... ironically my son has a similar spec'd system and we get the same error for his. Anyone have any advice I suspect and rightfully so its the m2 nvme part as another system running traditional ssd has no issue updating.





Windows 10 Professional 64bit 1909 Build 18363.1474
Asus Rog Crossfire VIII Hero X570 (Bios 3402)
AMD Ryzen 3900x
AIO - Thermaltake Floe DX 240
G.Skill Trident Z Neo 4x16GB DDR4-3600
MSI 980 GTX  Geforce
Sabrent Rocket Q 1TB NVMe "OS"
WD 4TB x2 "Storage"
My Sons system 

Windows 10 Professional 64bit 1909 Build 18363.1474
Asus X570 Gaming-F Strix
AMD Ryzen 2700x
Stock Air Coller
2x16GB DDR4-3200
AMD Radeon 5700
Sabrent Rocket Q 512G NVMe "OS"

windows-10-general
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SSengupta-4080 avatar image
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SSengupta-4080 answered thevoices-0503 commented

Kindly go through the following Microsoft reference:

Get help with Windows 10 upgrade and installation errors


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I have actually been down all these, again I have 2 very similar hardware profiles both having the same result.

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TeemoTang-MSFT avatar image
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TeemoTang-MSFT answered TeemoTang-MSFT commented

Try the Windows Update Assistant or Media creation tool here, disable your antivirus.
https://www.microsoft.com/en-us/software-download/windows10
If you still see Inaccessible Boot Device Issue after using above tools, you need to use media creation tool to create a installation media, then clean install Windows 10 by this media, remember backup the important data in C partition.


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