Update: Oh on my internal drive, not external. But I only have an external drive at this point.
Earlier to said erase the mavericks part of my hard drive:
Did I misunderstand again?
Also, I thought TM came on all Macs.
No misunderstanding; my instructions stand. I was just making certain that you weren't confused and tracked into something self-destructive.
Correct, TM does come on all Macs, but I trash it, because I clean everything I"ve got no intention of using out of my Apps folder. (I can always restore it with Pacifist if the need arises.)