Hey guys, I have troubles erasing my external hard drive Seagate 640gb using USB 2.0. This drives has no data in it. I'm not very good in computers. So I tried using disk utility "Erase" function to erase into Mac OS extended (journaled). But the loading bar just kept going I went to the partition tab to apply GUID type (I'm not sure the meaning of it, but I know its something to do with Intel Macs as stated by disk utility). The loading bar appear but it just kept loading but showing no progress for a few hours. Lastly, I tried using the last resort that I search in the internet, which is terminal using "diskutil eraseDisk HFS+ newdisk disk1" but to no avail. So basically the bar just kept loading for few hours. Normally after loading bar, there is a progress bar. I'm stuck at loading bar for like 2-3 hours. Is this the right way to format a drive? By the way, I'm actually trying to clone my macbook internal drive to this SEAGATE 640gb drive so that my macbook can boot from this external drive instead of my internal drive. I'm running Max OS X Leopard 10.5.8 by the way. Pardon for my english. Help would be appreciated. I'm kind of running out of ideas.