My ps3 wont pick up My Book Elite external hard drive?

My ps3 Is able to pick up my WD passport so I can watch videos and listen to music but when I put my WD my book elite nothing pops up and there both external drives??? Does anyone know why one works and not the other on my ps3???

Thanks help is appreciated

Probably would be good to ask on the PS3 forums, too…

How is the My Book Elite formatted? NTFS or FAT32 Logical? It needs FAT32 Logical.