Software⏱️ 3 min read📅 2026-06-19

How to Fix: Deleted Linux and Windows partitions, now have Grub error

GRUB error after deleting Linux and Windows partitions

Quick Answer: Reinstall GRUB and update the boot loader to resolve the issue.

The user has encountered an error after deleting Linux and Windows partitions, resulting in a GRUB loading error. This issue affects users who have attempted to reinstall operating systems on their laptops without properly configuring the boot loader.

This error can be frustrating for users who rely on their laptops for daily tasks. In this guide, we will walk you through the steps to resolve the GRUB loading error and regain access to your laptop.

💡 Why You Are Getting This Error

  • The primary reason for this error is that the user attempted to delete the Windows partition without properly configuring the boot loader. This has resulted in the loss of the Windows bootloader, making it difficult to boot into Windows 7.
  • An alternative reason could be that the user's laptop BIOS is not set to boot from the USB drive or CD/DVD drive containing the installation media.

✅ Best Solutions to Fix It

Reinstalling GRUB and Configuring the Boot Loader

  1. Step 1: Insert the Windows 7 installation media into the laptop's CD/DVD drive and restart the laptop. Enter the BIOS settings by pressing F2, F12, or Del during boot. Ensure that the USB drive is set as the first boot device.
  2. Step 2: Save the changes to the BIOS settings and exit. The laptop should now boot from the Windows 7 installation media. Follow the on-screen instructions to start the installation process.
  3. Step 3: Once the installation is complete, restart the laptop and enter the BIOS settings again. Set the GRUB bootloader as the first boot device and save the changes.

Using a Live USB Drive with a Boot Loader

  1. Step 1: Create a live USB drive for Windows 7 using a tool such as Rufus. This will allow you to install Windows 7 without needing to boot from a CD/DVD.
  2. Step 2: Insert the live USB drive into the laptop's USB port and restart the laptop. The live USB drive should now be detected by the BIOS settings.

💡 Conclusion

By following these steps, you should be able to resolve the GRUB loading error and regain access to your laptop. If you are still experiencing issues, it may be necessary to seek further assistance from a professional IT technician.

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