OS X Yosemite
Downloaded Yosemite. Selected a language, accepted the terms, waited and waited. Get the error message "OS X cannot be installed on your computer".
Tried Command R..just tries to load os x again. held down option, my recovery disk is not available. I cannot even load my original disk, the drive just spits it out. I can get to disk utilities at the error message, but it won't let me do anything to the drives. It keep telling me I cannot unmounts this drive. was going to try the on line chat, but I cannot get the serial number because this **** thing will no longer boot up. Can anyone help?
MacBook