Hey guys, just got a new momentus XT and finished installing it. Im at the disk utility page. im somewhat confused though. all the youtube videos i see say to set up the HD, you go to erase, mac os x extended (journaled) and than you click erase and than install snow leopard like how u usually go about. BUT from the manuals from apple it says to Click the Partition tab. Click on Options, and verify GUID is selected if this is the startup drive. Name the volume Macintosh HD. Apply the change by clicking the Partition button. PLEASE TELL WHICH WAY I DO THIS. i would hate to mess up a new hard drive. i just like to be thorough on the things i do, so i was just curious on what the difference between those two methods are. and whether one is better than the other.!!!