Resolving Boot Issues Post macOS Sonoma Installation

Your issue with booting into Windows after installing macOS Sonoma is a common challenge in dual-boot setups. The screenshot you've provided indicates that the system is not recognizing the Windows boot partition. Here's a step-by-step guide to help you resolve this:

1. Check Boot Priority in BIOS:

   • Restart your computer and enter the BIOS setup.
   • Ensure that the boot priority is set correctly. The disk containing Windows should be recognized and set as a boot option.
   • If you're using UEFI, ensure that both macOS and Windows are set up in UEFI mode.

2. Verify Disk Partition Integrity:

   • Boot into macOS and use Disk Utility to check the integrity of the Windows partition.
   • Look for any signs of corruption or misconfiguration.
   • If Disk Utility detects issues, it might be able to repair them.

3. Use Clover or OpenCore Boot Manager:

   • If you're using a boot manager like Clover or OpenCore for your Hackintosh, it should ideally list both macOS and Windows as boot options.
   • Ensure that your boot manager is properly configured to recognize the Windows EFI partition.
   • Update your boot manager to the latest version, as newer versions might have better support for dual-boot configurations.

4. Windows Boot Manager:

   • If Windows Boot Manager is not showing up in your boot options, the EFI partition might have been altered or corrupted during the macOS installation.
   • Use a Windows installation media (USB/DVD) to repair the Windows boot loader.
   • Boot from the Windows installation media, go to “Repair your computer” > “Troubleshoot” > “Command Prompt”, and use bootrec commands like bootrec /fixboot and bootrec /rebuildbcd.

5. Adjusting EFI Partitions:

   • Sometimes, macOS installation might create a new EFI partition, and the system might be booting to the wrong one.
   • You can check and edit EFI partition entries using tools like efibootmgr in Linux or EasyUEFI in Windows.

6. Ensure Separate Drives (If Applicable):

   • If macOS and Windows are installed on separate drives, ensure both are connected and recognized by the BIOS.
   • In a dual-drive setup, each drive should have its own EFI partition.

7. Final BIOS Check:

   • Double-check your BIOS settings for any settings specific to Windows booting, like Secure Boot, Fast Boot, or CSM (Compatibility Support Module).
   • Sometimes, these need to be toggled after installing macOS.

Important Notes:

• Always backup important data before making changes to partitions or boot configurations.
• Be cautious when using disk and partition management tools to avoid data loss.

If these steps do not resolve the issue, it's possible that the Windows installation has been compromised, and you might need to reinstall Windows. Remember, dual-booting can be complex, and sometimes a fresh installation of one or both operating systems is required to get everything working seamlessly.