Check your motherboard schematics. The SATA slots are usually numbered (in the schematic) 0,1,2,3 with the 0 slot in the upper left hand corner. Choose the 0 slot.
my mother board d101ggc has 4 sata connectors. Is there any distinction among them as primary and secondary as we have in ide slots? If so how to identify them?
In one of the microsoft knowledge base articles, it recommends to connect the data cable to primary slot. Hence the doubt.