I have a Mac mini with a rapidly failing internal HDD. I've bought a SSD to install, but can I just fit the SSD, boot the computer and get OS X recovery to install a clean version of El Capitan? Or do I need to format the SSD and clone my internal drive first? My internal drive is about to fail, according to SMART - it has thousands of bad sectors, and I have a lot of data files that can't be read (as I discovered when I tried to copy them off onto another drive). I do have a Time Machine back-up, but I would prefer a fresh install of OS X. If I use something like Carbon Copy Cloner, won't it just get stuck on the bad sectors and damaged files?