My situation may not apply to you. I guess it's not the norm. Either way, once you boot into recovery like suggested in the first two posts or the Internet way I ended up having to do, it's not too difficult. Steps I took..
- Booted to Internet recovery
- deleted existing partition
- ran diskutil list command from terminal
- copied my UUID
- ran the diskutil delete command / pasted my UUID
- It runs a quick process
- Exit terminal and go back in disk util
- Go to partition tab and create one, name it.
- Changes apply, exit disk util
- Choose reinstall OSx, choose drive to install on...it'll be the drive you named.
- Hit next and off it goes. Don't watch the countdown on screen. Took about 1.5hrs.
- Next thing I knew it had installed the OS and was talking to me.
All of this would have taken 15 mins plus the install time had I known more about Macs.