I try to install SL in a blank 2.5" HD that i have inside my desktop yesterday from Leopard running on a partition on another hard drive that contains my data and the OS only. All went pretty good until l had to figure out my Video card EFI string because I don't know how to get it from my Radeon 4850. I copied another string from someone else and continued the process and boot but i am stuck in the apple logo with the wheel under. It just stays turning. Could someone please help me, I really don't know anything about programming or terminal but after doing research about the 4850 2 methods to get the EFI im still confused.