![update leopard 10.5.2 to mountain lion mac update leopard 10.5.2 to mountain lion mac](https://i.ytimg.com/vi/xGaLHpQa-6g/maxresdefault.jpg)
![update leopard 10.5.2 to mountain lion mac update leopard 10.5.2 to mountain lion mac](https://i.ytimg.com/vi/0d1eqczVs0U/maxresdefault.jpg)
- Update leopard 10.5.2 to mountain lion mac mac os x#
- Update leopard 10.5.2 to mountain lion mac install#
The Mountain Lion installer will, however, install onto a blank drive, so Mountain Lion clearly doesn’t need any of Snow Leopard’s files or settings.
Update leopard 10.5.2 to mountain lion mac mac os x#
In my testing with many Macs, the Mountain Lion installer, like the Lion installer before it, refuses to install onto a drive containing Leopard in fact, it refuses to install on any drive running a version of Mac OS X below 10.6.8, just as its official system requirements claim. The Mountain Lion installer refuses to install onto a drive running Leopard (OS X 10.5). So then the question becomes whether there are any technical reasons you can’t install Mountain Lion over Leopard. In other words, in our view, you should be well within your rights to install Mountain Lion on any of your computers for which you have a valid, current Snow Leopard or Lion license-even if you don’t actually install Snow Leopard first. While the letter of the law says you need to install at least Snow Leopard before installing Mountain Lion, the spirit of the law seems to be that a particular Leopard-equipped Mac just needs a license for Snow Leopard or Lion before you can upgrade it. Having performed this two-step upgrade many times while researching our various Mountain Lion-installation articles (and last year while writing our Lion-installation articles), I can tell you that it’s a real hassle.īut lets take a step back. This is just one scenario-I can think of a number of situations in which you might have Leopard on a Mac or an external drive, along with a valid license for Snow Leopard, and you’d rather not take the interim step of installing Snow Leopard just to upgrade to Mountain Lion. But what if, for example, you’ve got a family-pack license for Snow Leopard, and you’ve got a Mac that shipped with Leopard but that’s never been upgraded to Snow Leopard or Lion? The Mountain Lion license agreements say that even if that Mac is compatible, you can’t upgrade to 10.8 until you first install at least Snow Leopard.