So I want to do a clean install of mavericks as my MacBook has started to slow down quite a bit. I'm not planning on using migration assistant, so I wanted to know if there were some old files that I needed from an old time machine backup would I still be able to access these? If not what are my options? The reason I ask is that I know in previous versions of Mac OS I have read of the difficulties in accessing time machine backups. I was hoping there was a way around this?