It's a limitation of Windows. You can't implement software raid until after Windows is fully booted. If the boot partition were inside a software controlled RAID configuration, you could not gain access to it. If you want to RAID the boot partition, you must use hardware based RAID.
Dig Deeper on Windows Server storage management
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.