If I understand what you want to do correctly, in Finder/Preferences/Sidebar, select sharing and devices. This should enable you to see the 2 computers in Finder.
Go to System Preferences/Sharing and select the first several items.
Now you should be able to log on to the other computer so you can copy things between them.
Thanks for the reply.
Yes I have done this already (is what i mentioned with AFP). I can in fact mount my mac this way, and see it in the sidebar.
I actually want to come back from school, put my macbook in some place of my room and close it. Then I'd want to go onto the mac mini and boot it up and be able to use my macbook's data.
I know newer Macbook air's have thunderbolt; mine doesnt. It is an early 2012 one .
The best thing would be to automatically mount the macbook, if this was possible. o.o
But most important, I just want to store my macbook away while working with the mac mini, but still being able to use it's data.
Yup, it appearently keeps the AFP-demon running. Means that I can access the files. Well what can I do now to "auto-mount" it as soon as it is detected?
EDIT: Ok, new issue x.x
I just activated sharing of a fat32 formated drive - and it doesnt appear on the mac mini O.O
EDIT2: O_o apple confuses me. When I share the fat32 vis AFP, it doesnt appear. BUT if I use SMB - it suddenly works. wth?...
What monitor do you have setup to your Mac Mini? There are times when you may want access to both without having to use the Mac mini to access your Macbook Air. You'll need to toggle Apple's keyboard and trackpad via bluetooth, but there are times when a direct connection is preferrable.
http://twelvesouth.com/products/BookArc_for_Air - useful dock
http://www.macworld.com/article/1158536/pairing_trackpad.html - how to toggle keyboard, mouse, trackpad