Software⏱️ 3 min read📅 2026-06-15

How to Fix: Windows 10: "inaccessible boot device" error

Windows 10 boot device error fix

Quick Answer: Try running a System File Checker (SFC) scan and checking for driver updates.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🔧 Proven Troubleshooting Steps
  3. 🎯 Final Words

The 'inaccessible boot device' error in Windows 10 occurs when the operating system is unable to identify the primary boot device, often due to a faulty or damaged disk. This issue can be frustrating, especially if it happens after an upgrade or driver update. In this guide, we'll walk you through the steps to troubleshoot and potentially fix this error.

If you've recently upgraded to Windows 10 and are experiencing this error, don't worry – there are ways to resolve it. We'll explore various methods to help you identify and possibly fix the root cause of the issue.

🔍 Why This Happens

  • The primary reason for the 'inaccessible boot device' error is a faulty or damaged disk. This can occur due to various reasons, such as a physical failure, corruption during the upgrade process, or incorrect driver installation. Additionally, some Windows 10 bugs may also cause this issue.
  • Another possible alternative root cause could be an incorrect boot order configuration in the BIOS settings.

🔧 Proven Troubleshooting Steps

Bootrec and Disk Check

  1. Step 1: Restart your computer and immediately hold down the Shift key. This will open the Advanced Boot Options menu. Select 'Troubleshoot' and then click on 'Advanced options'. From there, select 'Command Prompt'.
  2. Step 2: In the Command Prompt window, type `bootrec /fixmbr` and press Enter to fix the master boot record.
  3. Step 3: Next, type `bootrec /fixboot` and press Enter to repair the boot sector. If you're prompted to replace the current boot sector, confirm with 'y'.
  4. Step 4: Finally, type `exit` and press Enter to close the Command Prompt window.

Safe Mode and Disk Check

  1. Step 1: Restart your computer and immediately hold down the Shift key. This will open the Advanced Boot Options menu. Select 'Troubleshoot' and then click on 'Advanced options'. From there, select 'Boot options'. Choose 'Windows 10 Safe Mode' from the list.
  2. Step 2: Once in Safe Mode, type `chkdsk /r` and press Enter to run a disk check. If the error persists, try running `chkdsk /f /r` to force a full disk check.

🎯 Final Words

If you've followed these steps and still can't resolve the issue, it's possible that there's a more serious problem with your disk or system configuration. In this case, consider seeking further assistance from Microsoft support or a professional IT technician.

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