That's not an error, it's completely normal to see that.
Pentium processors are not supported as Apple do not use them in their products.
Open Core Pentium/Celeron Guide. Catalina Preface This guide is based on the Kernel patch and Emulate functions of Open Core Bootloader. Thanks to the work of PMHeart we have the needed Emulate settings and thanks to vit9696 we have the Kernel Patches needed to use Pentium and Celeron systems...
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