My book mac wont work on ps3? HELP

I purchased my passport mac 320gb hard drive yesterday. iAnd after transferring all my data to it i plugged it into my ps3 but nothing showed up??

i then followed the instruction to format it to FAT32. which i think i have done. it was in a section where i partitioned it??

so i created 2 so it now has 2 lots of 160gb. but still doesnt work?

please can anyone help??

many thanks in adavance :slight_smile: