Software⏱️ 4 min read📅 2026-06-11

How to Fix: USB Windows 10 “inaccessible booting device” error

Windows 10 USB booting issue fix

Quick Answer: Check the SATA USB adaptor settings and ensure it is set to boot from the external drive.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

The 'inaccessible booting device' error is a common issue encountered by Windows 10 users who have upgraded their internal hard drive and want to use it as an external USB booting drive. This error can be frustrating, especially when the drive works fine as an internal drive but fails to boot from it via USB. In this guide, we will walk you through the possible causes of this issue and provide steps to resolve it.

The main goal of this troubleshooting guide is to help you identify and fix the root cause of the 'inaccessible booting device' error on your Windows 10 system.

🔍 Why This Happens

  • The primary reason for this error is that the SATA USB adaptor is not properly configured or recognized by the motherboard. When you upgrade the internal hard drive, the SATA cable might be damaged or not securely connected to the motherboard. This can prevent the system from detecting the external drive as a bootable device.
  • An alternative cause of this issue could be related to the firmware settings on your motherboard or the USB controller. In some cases, the firmware might need to be updated or reset to recognize the SATA USB adaptor and the external drive properly.

🔧 Proven Troubleshooting Steps

Configuring the SATA USB Adaptor

  1. Step 1: Step 1: Disable any existing USB boot options in the BIOS settings. To do this, enter your computer's BIOS setup (usually by pressing F2, F12, or Del during startup) and navigate to the Boot Options section. Look for any USB boot options and disable them.
  2. Step 2: Step 2: Check the SATA cable connections. Verify that all SATA cables are securely connected to both the motherboard and the external hard drive. If you find any loose connections, tighten them firmly.
  3. Step 3: Step 3: Update the BIOS firmware if necessary. Some motherboards require firmware updates to recognize the SATA USB adaptor correctly. You can check your motherboard manual or manufacturer's website for instructions on how to update the BIOS.

Resetting the USB Controller

  1. Step 1: Step 1: Enter the Device Manager and expand the 'Universal Serial Bus Controllers' section. Look for any USB controllers related to SATA ports and right-click on them. Select 'Uninstall device' to remove the controller.
  2. Step 2: Step 2: Restart your computer and enter the BIOS setup again (if necessary). Look for a reset or clear option in the BIOS settings and follow the instructions to reset the USB controller.

💡 Conclusion

If you have followed these steps, your Windows 10 system should now be able to boot from the external hard drive via SATA USB adaptor. If the issue persists, it may be necessary to consult with a professional or contact the manufacturer's support for further assistance.

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