Inaccessible boot device after latest insider update this morning (build 21364)

Anonymous
2021-04-28T17:55:33+00:00

Nothing works in the recovery mode as it cannot back out the update, cannot repair. 

One of the update is kb5003399 and I forgot the other one, will have to boot back to the command prompt.

In the command prompt, I can tell it's not showing my 1TB drive, it's in x:/ with very little space.

Also, wusa.exe doesn't exist in that command prompt. 

Can anyone help to get my system booting again?

MB: GIGABYTE X570 AORUS ELITE WIFI AM4 AMD X570

CPU: AMD RYZEN 5 3600 6-Core 3.6 GHz

GPU: Nvidia 1070<feff><feff>

Memory: 64 GB (4 x 16 GB Crucial Ballistix 32GB Kit (2 x 16GB) DDR4-3600 )

Drive: Samsung 1TB 970 EVO NVMe M.2 Internal SSD

Windows Insider program | Windows Insider preview | Desktop environment and Start menu

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  1. Anonymous
    2021-04-30T14:40:52+00:00

    Eddie, is there a bug tracking for the Advanced Micro Devices, Inc. - SCSIAdapter - 9.3.0.221 driver? I think maybe it's using SCSI translation for NVME and SATA. That's why I am affected. I cannot update now with that issue. Thank you for your help.

    The issue is being investigated. I can't say for sure if there is an issue with that particular 3rd party driver, but is just something I noticed in common with the reports. One possible thing to try (after making sure you have a good backup/restore point). would be to roll back to a previous version of that driver and seeing if you can install the latest Windows build (21370). Completely up to you and your comfort level.

    -Eddie

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  2. Anonymous
    2021-04-30T11:57:13+00:00

    Eddie, is there a bug tracking for the Advanced Micro Devices, Inc. - SCSIAdapter - 9.3.0.221 driver? I think maybe it's using SCSI translation for NVME and SATA. That's why I am affected. I cannot update now with that issue. Thank you for your help.

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  3. Anonymous
    2021-04-30T03:19:28+00:00

    yup, the os is back to the previous build version:

    Edition Windows 10 Pro

    Version Dev

    Installed on ‎4/‎20/‎2021

    OS build 21359.1

    Experience Windows 10 Feature Experience Pack 321.7601.0.3

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  4. Anonymous
    2021-04-30T03:17:08+00:00

    Good news. I tried the "Startup Repair" a couple times and after a few reboot by itself, I got windows to boot again!

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  5. Anonymous
    2021-04-30T03:12:37+00:00

    I made some progress following the step in the last reply of this page: https://social.technet.microsoft.com/Forums/en-US/b228ae18-a637-4887-992f-e3e128e33d74/how-to-fix-inaccessiblebootdevice-windows-10-pro?forum=win10itprogeneral

    The key is to use Windows 10 Installation CD/USB recovery instead of the one from the installed drive. The update messed up that recovery as well so it is not seeing the drive at all.

    I still get the same error (inaccessable boot device) but at least now I can see my drive c: (osdevice) from the recovery command prompt. 

    One odd thing now is that wmic no longer shows the above 2 hotfix is applied.

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