Restore Win Boot Loader Entry in UEFI/GRUB2

Restoring Windows Boot Loader Entry after Installing another OS: A Guide for UEFI/GRUB2 Users (For Windows 11 Build 27754 Canary Channel Users)

Abstract: Facing issues with the Windows boot loader after installing a different OS alongside Windows 11 Canary Channel? Learn how to restore the Windows boot loader entry using UEFI/GRUB2 with this simple guide. Invitation to read more for tech support.

Created: 2024-12-01 by

Introduction

This article provides a step-by-step guide for Windows 11 Build 27754 Canary Channel users who have installed Fedora 41 KDE Spin alongside their Windows installation and encounter issues with the Windows BootLoader entry. The guide focuses on using UEFI and GRUB2 to restore the Windows BootLoader.

Understanding UEFI and GRUB2

UEFI (Unified Extensible Firmware Interface) is a modern replacement for the traditional BIOS (Basic Input/Output System). It offers enhanced security features, improved boot speed, and the ability to load operating systems from various file systems.

GRUB2 (GNU GRUB 2) is a popular bootloader used by many Linux distributions, including Fedora. It provides a flexible and extensible way to manage the boot process, including handling multiple operating systems and their respective bootloaders.

Booting into Fedora

Before attempting to restore the Windows BootLoader, ensure that you can boot into your Fedora installation. Reboot your system and press the key to enter the UEFI boot menu (usually F12 or Esc). Select the Fedora entry and press Enter.

Creating a Windows Bootable USB

First, you need to create a Windows installation media on a USB drive. Use a tool like Rufus (https://rufus.ie/) to create a bootable USB drive with the Windows 11 ISO file.

Booting into Windows Installation Media

Restart your system and press the key to enter the UEFI boot menu. Select the Windows installation media and press Enter.

Reinstalling Windows BootLoader

Once you've booted into the Windows installation media, follow these steps to reinstall the Windows BootLoader:

  1. Choose the language, time, and keyboard layout, and then press Next.
  2. Click on "Install now" to begin the installation process.
  3. Enter your product key when prompted and click Next.
  4. Select the "Custom: Install Windows only (advanced)" option and click Next.
  5. Select the partition where your existing Windows installation is located and click Next.
  6. Click on "Format" and confirm the action.
  7. Select the "Keep personal files, apps, and Windows settings" option and click Next.
  8. Click on "Install" to begin the installation process.

Restoring Windows BootLoader

After the installation process is complete, the Windows BootLoader should be automatically restored. However, if you still cannot boot into Windows, follow these steps:

  1. Restart your system and press the key to enter the UEFI boot menu.
  2. Select the Windows installation and press F9 to load the Boot Manager.
  3. Use the arrow keys to select your Windows installation and press Enter.

Conclusion

In this guide, we have learned how to restore the Windows BootLoader entry when installing another OS alongside Windows 11 (Build 27754 Canary Channel) using UEFI and GRUB2. By following the steps outlined in this article, you should be able to successfully boot into your Windows installation.

References

Tags: UEFI GRUB2 Windows 11 Dual Boot Tech Support

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