It seems like you are facing an issue when trying to install Windows 7 on your system with RAID configuration. The error message you are encountering typically indicates a problem with the drive partitions during the installation process. Here are a few troubleshooting steps you can try to resolve this issue: 1. Check RAID Configuration: - Make sure that your RAID 1 setups are properly configured and recognized by the system. Double-check the RAID controller settings in the BIOS to ensure that the RAID volumes are set up correctly. 2. Create RAID Array Manually: - During the Windows installation process, you may need to manually create the RAID array using the RAID driver provided by your motherboard manufacturer. Make sure you have the correct RAID drivers available on a separate USB drive during the installation. 3. Load RAID Drivers: - When prompted to select the drive to install Windows on, you should have the option to load additional drivers. At this stage, load the RAID driver specific to your motherboard to ensure that Windows can detect the RAID volumes. 4. Partition the Drives: - If Windows is unable to create a system partition, you may need to use the command prompt within the Windows installation environment to manually create the partitions. You can use diskpart commands to create the necessary partitions before selecting a drive for installation. 5. Check Compatibility: - Ensure that the RAID controller on your motherboard is fully compatible with Windows 7. Sometimes older RAID controllers may have issues with newer operating systems due to compatibility limitations. 6. Verify Data Integrity: - Before proceeding with the installation, make sure that the drives in your RAID arrays are in good health and do not have any issues that could be causing the installation failure. By following these steps, you should be able to troubleshoot the issue you are facing during the Windows 7 installation on your RAID-configured system. If you encounter any specific errors or need further assistance, feel free to provide more details for a more tailored solution.