Windows not appearing in Boot Manager

If after reconnecting the drive, Windows is not being detected by the Boot Manager and it is not showing up as a boot option, you can follow these steps to try and resolve the issue: 1. Repair the Windows Boot Loader: - Boot from a Windows installation USB or DVD and select the "Repair your computer" option. - Go to Troubleshoot > Advanced options > Command Prompt. - Run the following commands: 2. Check Boot Order in BIOS/UEFI: - Enter your BIOS or UEFI settings during startup. - Ensure that the hard drive containing Windows 10 is set as the primary boot device. - Save changes and exit the BIOS/UEFI. 3. Use Automatic Repair: - Boot from the Windows installation media. - Choose the language, time, currency, and keyboard preferences. - Select "Repair your computer" > Troubleshoot > Advanced options > Startup Repair. 4. Check Disk Management: - Right-click on the Start button and select Disk Management. - Check if the Windows partition is marked as "Active" and has the correct drive letter assigned. 5. Use Boot Repair Utility (for dual-boot systems): - For dual-boot setups, you can use boot repair utilities like boot-repair in Linux to fix boot issues. 6. Restore Windows Bootloader: - You can try booting into Pop OS!, opening a terminal, and reinstalling the Windows bootloader using GRUB customizer or related tools. 7. Professional Help: - If the above steps do not work, consider seeking assistance from a professional or your IT department for advanced troubleshooting. By following these steps, you may be able to repair the Windows bootloader and get Windows 10 to show up in the Boot Manager again.