Snow Leopard to El Capitan Failure
I cannot upgrade my OS from Snow Leopard to El Capitan. I replaced the hard drive on my late 2009 MacBook Pro and re-installed Snow Leopard from the boot disc. I updated to 10.6.8 then downloaded El Capitan from the Apple website. No updates show up in the App Store. Once downloaded the installation starts eventually requiring a computer restart. After the restart, the computer progress bar only gets to roughly 1/2 inch of progress before stopping. This is after waiting overnight. I tried restarting but end up having to reformat the drive and re-install Snow Leopard. What am I doing wrong?
MacBook Pro