I purchased a 2010 iMac for a friend and the seller didn't wipe the machine before he shipped it. I've been trying to do a re-install of Snow Leopard with the disks that came with the machine and even though it installs, it is not wiping the drive. Everything is still there as before the install. I followed the instructions as to how to do the clean install and have done it twice, but still with the same results. If I can't get it to work, is there a way to rename the original owners main file in the Finder window to a new name? Thanks for any help that comes.