Tried to update MacBook to Yosemite, won't boot now
I decided to update my MacBook (late 2008, aluminum) to Yosemite from Mountain Lion. Update failed. Now the MacBook won't boot into either OS. I'd like to create a CLEAN reinstall of Mountain Lion but can't find a means to do that. (No I don't have a backup of this machine. There was no data on it.)
I can't find any way to obtain or purchase a disc with Mountain Lion or Yosemite that I can use to boot the computer and then erase the HDD before installing the OS. I'm stuck. Help...
Dennis...
MacBook, OS X Mountain Lion (10.8.5)