Fix Inaccessible Boot Device on SCSIAdapter 9.3.0.221 Driver update in Windows 10

Windows 10 has received an update for AMD driver (28 April 2021) unfortunately it throws BSOD issue making the desktop unable to access. Following the automatic behavior of Windows update, SCSIAdapter 9.3.0.221 is installed and soon causes the Blue Screen error. Mostly, error INACCESSIBLE BOOT DEVICE occurs on reboot after installation with system crash.

To fix Inaccessible_Boot_Device Bsod either you might prevent the rollout from being installed or rollback the driver. For some users, Startup repair worked like a wonder to solve the issue. The driver is supposed to have a bug that affects AMD configurations only, particularly the PC with GIGABYTE X570 motherboard.

Inaccessible Boot Device on SCSIAdapter 9.3.0.221 Driver update in Windows 10

Here is how to fix Inaccessible Boot Device on SCSIAdapter 9.3.0.221 Driver update in Windows 10 –

1] Hide the update

However, a software engineer has recently informed on Reddit that Microsoft has pulled off the Windows update so the release will no longer be installed automatically. However, you can hide the update manually using a built-in tool for Windows 10 using the following instructions  –

1. Download the tool by clicking wushowhide_tool.
2. Compress the file and double-click on wushowhide.diagcab.
3. Select – Next.
4. Click – Hide updates.
5. Choose the SCSIAdapter 9.3.0.221 Driver update.

2] Rollback the driver

If you have already installed the AMD supported driver version 9.3.0.221 and started encountering BSOD Inaccessible_Boot_Device then you can roll back the update through the Device Manager. This will uninstall the recently installed SCSIAdapter 9.3.0.221 restoring the errorless state of Windows 10.

1. Press – Win+R.
2. Type in – Devmgmt.msc.
3. Press – Enter.
4. Once the Device Manager appears, double click –  Storage controllers.
5. Right click the Microsoft Storage Spaces Controller and select – Properties.
6. Navigate to – Driver.
7. Select – Roll Back Driver.

3] Via Automatic Repair wizard

Microsoft has already suspended the offending driver update however if you have already installed it can be fixed by following the system startup automatic repair wizard. Follow the guidelines –

1. Press – Winkey.
2. Type – advanced startup.
3. Hit – Enter.
4. Click – Restart now.
5. Next , click – Troubleshoot.
6. Select – Startup Repair and pursue the steps till the end.

This will fix the Inaccessible Boot Device on SCSIAdapter 9.3.0.221 Driver update in Windows 10.

Methods list:
1] Hide the update
2] Rollback the driver
3] Via Automatic Repair wizard

That’s all!!