Sorry if i make any mistakes im new on this. So I'm about to install mavericks on my mac mini, and I want to install it on my macbook air, I can't download again the 5gb on my macbook air, it takes too much time. Can i just drag and drop the installer on a usb or data card or external HD, and paste it on my application folder on my macbook air and just install it? And why am I seeing allover the internet people saying that to do this i have to format my usb and some weird things.... Thanks for the help!