Hi, I have a 2009 15" MBP running 10.6.8. I partitioned the drive a while back because I had to run some windows software, but now I want to delete it. If I go to disk utility, click the partition and then click erase, I have to select which format I want (Mac OS Extended (journaled), Mac OS Extended etc...) and I am unsure what to choose. I just want one drive with all the memory on it, functioning like when I bought the MBP. Also I am not sure if using this workflow will create two mac drives, or just a single unified drive. Thanks to anyone who responds.