The requested system device cannot be found

The error of $ 0027 The requested system device cannot be found $ 0027 it is usually caused by plugging the USB into the wrong USB slot, etc. because users cannot repair their system. When Windows cannot boot properly and users try to repair the Master boot record (MBR) When using command prompt with Windows installation media, they rarely get this error. The reason why Windows cannot boot is BCD file corruption or damage.

At those moments, naturally it would refer to system recovery using installation media. Recovery is not easy and, sometimes, it's full of mistakes that will prevent you from doing it. The mentioned topic can be taken as an example. Before reaching the solution of such error, it is necessary to examine the causes.

Windows $ 0027 The requested system device cannot be found $ 0027 Error

What causes the error “The requested system device cannot be found”?

Well, the error does not occur frequently, but when it happens, is generally due to the following factors:

• USB connected to the wrong USB slot . If the USB containing the installation media is connected to a slot that is supported by your BIOS but is not approved by the Windows repair environment, the error will occur.
• The installation media cannot find the correct volume . Booting from a Windows UEFI installation media drive may cause the error, as you will not be able to find the system volume on the hard drive.
• Converting the system to GPT . If you convert MBR to GPT without changing the MBR boot option / BIOS a UEFI, the error may appear.

You can use the following solutions to solve your problem.

Solution 1: Repair using DVD / CD as installation medium

If you have been using USB as the installation media, switching to a DVD or CD might fix the error. Sometimes, Windows pre-install environment cannot detect USB drive due to error occurring. Therefore, you will have to opt for a DVD or a CD. Here's how to do it:

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1. Get a DVD or CD and create a Windows installation media on it using the Media Creation Tool.

2. Boot from the respective drive and click $ 0027 Repair your computer $ 0027. repair windows

3. Switch to Troubleshooting> Advanced options and finally open a command prompt.

4. Write these commands one by one:

   bootrec / fixmbr

   bootrec / fixboot

   bootrec / rebuildbcd

   Rebuilding the Windows BCD file

5. Once the process is finished, reboot the machine and check if your system loads.

Solution 2: set correct volume in command prompt

If you are using USB as the installation media, you can solve the error by setting the correct volume. In some cases, USB cannot find the correct system volume, what causes the error to appear. Therefore, use the following method to configure the correct partition:

1. Boot from a Windows UEFI installation media and open a command prompt as mentioned above.

2. Open the DiskPart utility by typing diskpart.

3. Scribe $ 0027 list disk $ 0027 to list all partitions.

4. Of the numbered partitions, locate the EFI partition (formatted as type FAT32 and will have a star below Gpt). EFI partition location

5. Once you have found the EFI partition, select partition by typing $ 0027 select volume X $ 0027. Note that X is the volume number, so make sure to replace it with the EFI partition number.

6. Now, scribe $ 0027 assign letter = y $ 0027. This will assign a letter to the EFI partition. You can freely change the alphabet $ 0027 Y $ 0027 whatever you want.

7. Scribe $ 0027 exit $ 0027 to close the diskpart utility.

8. Then type the following commands in the Prompt command:

   cd / d y:EFIMicrosoftBoot

   bootrec / fixboot

9. If you have assigned a different letter to $ 0027 Y $ 0027, make sure to replace it in the above command.

10. Then enter the following command which will rename the BCD file to BCD.bak.

    run BCD BCD.bak

11. Finally, enter the following command:

    bcdboot c:Windows / l en-us / s y: /f ALL

12. Change the letter and here also if you have assigned a different letter.

13. Scribe $ 0027 exit $ 0027 to close the command line.

14. Disconnect the installation media drive.

15. Reboot your system to see if this has fixed your problem.

Solution 3: reinstale Windows

If the above-mentioned solutions don't work for you, you only have one option: reinstall Windows. It can be troublesome, but there is no other way to solve this problem. Therefore, reinstalling Windows is your last resort if you want to use the system again.

SUGGESTION: If none of the methods have solved your problem, we recommend that you use the Reimage repair tool, which can scan repositories to replace damaged and lost files. This works in most cases, when the problem originates due to a system corruption. Reimage will also optimize your system for maximum performance. You can download Reimage for By clicking here