Before upgrading, it’s recommended to ensure that you have the latest RAID controller drivers compatible with Windows 11. Check the manufacturer’s website for updated drivers.
Make a complete backup of your important data.
Download the Windows 11 installation media (ISO file) from the official Microsoft website.
Create a bootable USB drive with the Windows 11 installation media.Insert the bootable USB drive into your computer and boot from it. Follow the on-screen instructions to begin the Windows 11 installation.
When you reach the “Where do you want to install Windows?” screen, you should see your RAID 1 array listed. Select the RAID array as the installation target. Windows 11 will treat the RAID array as a single disk.
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