My drive on my mb pro started the click death and died.
I replaced 500 gb with smaller 250gb drive and now all the thing does is go to a blinking folder. it will not accept any key commands. I have tried every command and cannot get it to boot to a cd,usb. I removed the drive to see if the drive was also bad and still no command will work. The cd will spin then gets spit out.
MacBook Pro, OS X Mountain Lion (10.8.5), key commands and blinking folder