From Mavericks to Snow Lion: how to get back?
31948
Roll back from OS X Mavericks ( or any newer OS) to Mountain Lion
123504
Copying applications from applications folder to external and reinstalling osx
154987
Setting the system-wide PATH environment variable in Mavericks
75873
Remove Ubuntu from a MacBook and put OS X back on
126915
Upgrading an old mac mini intel 1.1 for Lion
101714
Is there any way to roll back the most recent upgrade?
68414
Where did the ~/Library folder go in Lion?
16451
How to install java jdk 7 on Snow Leopard
21347
Reattach to lost X11 session
136913
how to change "kind" of files in OSX mavericks?
110599
How do people who recently bought a Macbook Pro get the free upgrade to Lion?
12170
How do I make a bootable USB OS X installer on a Mac?
82509
Going back to a previous Ubuntu state
74932
Erased Macintosh HD and installing OS X Lion again
52382
Where can I get a copy of Mavericks after Yosimite has been released?
52087
How to re-download Lion from Mountain Lion
21321
BootChamp no longer works on El Capitan, what's the fastest way to boot into Windows?