Hello, I have in a corner an old mac I would like to use which has the 10.5 OS ("Leopard"). I would like to upgrade to 10.6, snow leopard, because I could install more stuff and software, but: 1) I can't buy it on apple store (because you need 10.6 version to use apple store) 2) I don't find him (or with fucking high prices!) Do you know where I can download the snow leopard OS, legally (or without viruses/backdoors/...)? And, do you know if I can get it for free? It's a very old version (it is not the yosemite or the capitan, or I don't what other strange name) after all. Thanks.