As the title says, I'd like to wipe out my hard drive entirely do a clean OS X install. In the past, I used to just manually copy all my files to a hard drive and then manually copy them back, along with settings and stuff. This was feasible a few year back, but not so much anymore. I'm quite certain the answer is a simple "yes" but since I've never done this, I want to be certain I'm not missing anything. So, if I have done a TM backup onto an external, am I free to just completely wipe the hard drive? Will restoring from the external time machine backup bring things back identically as they were before? Will all applications work, or will I need to reinstall some and reenter serial codes? Thanks for the help.