I was trying to install leopard onto my mac but it didnt work because i was using an iMac installation disc and i figured that it would work but it doesnt because i found out that the discs are model specific. Anyways, so i was like alright that is fine so i figured i could go ahead and start my computer up fine but i was wrong....Whenever i start it up it doesnt even get to the log in screen and it just shuts down. I put in the Macbook installation disc and when it gets to the screen that says select a destination to install the operating system it doesnt give me a hard drive to select from....so it is basically telling me that i have no hard drive....but i know i do because i didnt take anything out of my macbook...... Any suggestions on how to fix this or what the problem is? Thanks guys