How do I fix: 🔍 Why This Happens?

The primary reason for this error is that Windows is not configured to detect USB drives as a boot device. When you cloned your disk, the original computer's hardware configuration was preserved, but the new computer may not have the same settings.Another possible cause is that the BIOS or UEFI firm

How do I fix: Create a Bootable USB Drive with a Bootable ISO?

Step 1: Download the Windows 10 installation media (ISO file) from Microsoft's website.Step 2: Create a bootable USB drive using the ISO file and a tool such as Rufus or UniFlash. Ensure that the USB drive is properly formatted and recognized by the computer.

Software⏱️ 3 min read📅 2026-06-11

How to Fix: How to force system detection during boot: Inaccessible Boot Device Error

Q: Best Solutions to Fix It Update Boot Order in BIOS/UEFI?

Step 1: Press the key to enter the BIOS/UEFI settings (usually F2, F12, or Del) and navigate to the boot order tab.Step 2: Ensure that the USB drive is listed as the first device in the boot order. If it's not, move it up to the top of the list.Step 3: Save the changes and exit the BIOS/UEFI setting

Windows boot device detection issue

Quick Answer: Try adding the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\BootDeviceOrder, and set the value to \"USB\". This will force Windows to detect the USB boot device.

📋 Table of Contents

🔍 Why This Happens
✅ Best Solutions to Fix It
🎯 Final Words

The INACCESSIBLE BOOT DEVICE error occurs when Windows is unable to detect the boot device, often due to configuration changes or hardware compatibility issues. This issue affects users who have cloned their Windows 10 disk and are trying to boot from a USB port on a different computer.

This error can be frustrating as it prevents users from accessing their operating system. However, by following the steps outlined in this guide, you should be able to resolve the issue and boot from your USB drive.

🔍 Why This Happens

The primary reason for this error is that Windows is not configured to detect USB drives as a boot device. When you cloned your disk, the original computer's hardware configuration was preserved, but the new computer may not have the same settings.
Another possible cause is that the BIOS or UEFI firmware is not set to recognize the USB drive as the primary boot device.

✅ Best Solutions to Fix It

Update Boot Order in BIOS/UEFI

Step 1: Press the key to enter the BIOS/UEFI settings (usually F2, F12, or Del) and navigate to the boot order tab.
Step 2: Ensure that the USB drive is listed as the first device in the boot order. If it's not, move it up to the top of the list.
Step 3: Save the changes and exit the BIOS/UEFI settings. The system should now detect the USB drive as the primary boot device.

Create a Bootable USB Drive with a Bootable ISO

Step 1: Download the Windows 10 installation media (ISO file) from Microsoft's website.
Step 2: Create a bootable USB drive using the ISO file and a tool such as Rufus or UniFlash. Ensure that the USB drive is properly formatted and recognized by the computer.

🎯 Final Words

To resolve the INACCESSIBLE BOOT DEVICE error, you can try updating the boot order in the BIOS/UEFI settings or creating a bootable USB drive with a Windows 10 installation media. By following these steps, you should be able to get your system to detect and boot from the USB drive.

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