I've been over many faq's and troubelshooting but can't seem to find an answer to this.
I'm currently running my mac from an external HD. My internal got corrupted, I can't repair it with disc utility. So I booted from an older time machine backup, on an external HD which now is my main HD and what I'm running from.
Anyway I want to put everything back the way it was. Meaning erasing my internal and let time machine put back a back up of my current workspace. But when I let it run he backs up the corrupted internal one. It even makes for a total of 500G, and my original HD is only 320.. so I'm making a backup to big to be used to restore later.
How can I change that he backups only the external information? Or maybe I'm wrong and he needs to back up the internal to for things to work since I still use it as my computer (but not my HD). I don't need the content of the original HD to be backed up along with my external one. I just want the workspace I created with a back up on my external to be put back on my erased, internal one..
I'm also worried if I erase my internal HD the booting help progam (C or R) will be gone to.. will it?