That usually means that Windows detected an illegal action and prevented its execution. Many users who tried to utilize it encountered the unsupported partition table error. What Is the Windows Loader in Status 'Unsupported Partition Table'?Īs a BIOS emulator, Windows Loader uses several tricks to activate the OS without a legitimate license key. 03 What's the Best Option to Fix the Unsupported Partition Table in Windows Loader? Part 1.