I have a mac book air from late 2013 ... this has montain lion installed.
I have been pretty happy with this os but, because of xcode 6 and swift language, I need to install 10.9.3.
Now I need to know:
- How to do a clean install (the app store distribution seens to update it directly and I need a package to install it outside iof the OS)
- Can I install it from a network (My mac does not have a dvd drive)?
- Can I revert to Montain Lion (windows computers generally do have a recovery partition from where you can install the original OS without any media).