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According to Google searching result and Microsoft community, it’s not a new problem for users to met the Inaccessible Boot Device error .

INACCESSIBLE_BOOT_DEVICE is a Blue Screen of Death error, and in this article we’ll show you how to recover data and fix this error. Windows 10 can’t access the system partition due to the following issues:

There can be multiple reasons for Inaccessible Boot Device Stop error.

  • Missing, corrupted, or misbehaving filter drivers that are related to the storage stack.
  • File system corruption.
  • Changes to the storage controller mode or settings in the BIOS.
  • Using a different storage controller over the default driver from Windows.
  • Moving the hard disk to a different computer that has a separate controller.
  • A faulty motherboard or storage controller, or faulty hardware.
  • Failure of the TrustedInstaller service to commit newly installed updates because of Component-Based Store corruptions.
  • Corrupted files in the Boot partition.

If you find your PC can’t boot after BIOS update, please recover data from the unbootable disk first. Then, try to repair the inaccessible boot device yourself.

Data Recovery for Inaccessible Boot Device Windows 10

The entire data recovery process contains 3 process.

Process one: find a safe data recovery tool and choose a proper edition for your case.

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Process  two: make a bootable USB disk or CD/DVD disc.

Process  three: boot computer with the disk created in the previous stage and use it to recover data.

This method requires you to make a bootable USB disk or CD/DVD disc. However, how to fix All these complex issues can all be fixed by professional MiniTool power data recovery. Free download it and follow the next steps to see how to recover data to the previous state so to fix Windows 10 INACCESSIBLE_BOOT_DEVICE error, In here, you need the Snap-in WinPE Bootable Builder to create a bootable disk so as to recover data from the inaccessible disk.

Step 1:

Connect a USB flash drive or insert a CD/DVD that you want to use as bootable disk.

Click on the Bootable Media button at the bottom left corner to open MiniTool Media Builder.

Select WinPE-based media with MiniTool plug-in.

Choose to create a bootable CD/DVD, USB flash drive, or build an .iso image.

Choose Yes in the Build boot disk window to confirm or choose a storage location for the .iso image file & click Save.

Wait for the building process to complete and click Finish.

Remove the disk from current computer properly.

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Step 2: Boot Your PC to Recover Data

How to boot your PC when running into stop 0x0000007b error?

1: connect the bootable USB flash drive or CD/DVD to your PC with inaccessible boot device BSOD problem.

2: restart your PC and press the certain button before Windows logo to enter BIOS Setup Utility.

3: modify the boot sequence to make computer boot from the disk you made. Then, exit and save changes.

4: wait for the countdown to end or click OK button to continue in both screen resolution changing window and MiniTool Power Data Recovery launching window.

5: click the first option to launch the data recovery software finally.

6: select an option from the left-hand panel and specify the drive containing your needed data from the right.

7: click Scan to detect files in that drive. Then, browse the search result and pick out the data you need.

8: click Save and choose another drive to store the files waiting to be recovered. At last, click OK to confirm your selection.

9: wait for the recovery to complete.

Please be advised that you can use the trial edition first to recover data from a working PC if you suspect the performance of Power Data Recovery.

Fix: Inaccessible Boot Device Windows 10

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Solution 1. Boot System in Safe Mode

If you encountered to boot Windows 10 or INACCESSIBLE_BOOT_DEVICE error happen to Windows 10, you can choose to boot the system from Safe Mode.

  1. Go to Settings > Update & security > Recovery > Advanced Startup > Restart now.
    2. Your PC will automatically boot into another Startup Settings screen, press F4 to initiate the reboot into Safe Mode. You may also press F5 to boot into Safe Mode with networking.

Solution 2. Preform a Clean Installation

If all the above recommended solutions are all not useful for your case, you can also choose to perform a clean installation of Windows 10 with a more stable version.

It’s likely that you could run into inaccessible boot device error during computer startup. When you see such error on a blue screen, you shouldn’t get into panic. What are the right things to do?

  1. recover your data from the boot device to prevent damage caused by data loss.
  2. use the methods mentioned in the last part to try to fix the error yourself.

If both failed, ask professionals for help.

Hope you can solve the inaccessible boot disk error and reboot your PC successfully.