Long story short - I stuck the Techtool Deluxe CD in thinking that was how I could format my new second HD. Know when I try to start my computer I get an Apple which quickly dissapears and is replaced by a black rectangle. The startup wheel just turns and turns and turns. The fans then kick up to jet engine speed and nothing happens. I cannot even start in safe mode. Stopping to at least read some of the directions, I booted off my OS X Tiger DVD. I went into Disk Utility to look at my drives. I tried First Aid on my primary disk and got Checking HFS Plus volume. Invalid B-tree node size. The volume Mike's Hard Drive needs to be repaired. 1 HFS Volume checked - Volume needs repair. Any help will be appreciated. I have a lot of stuff I really would hate to lose on that drive. How do I simply format the second drive?