You need to buy 10.6 upgrade from the online Apple Store Mac OS X 10.6 Snow Leopard it costs $19.99. OsX upgrades up to and including Snow Leopard (like all Windows. To install OS X 10.8 Mountain Lion, 10.9 Mavericks (free upgrade, but currently unavailable) or OS X 10.10 Yosemite (currently available free upgrade) you need one of these Macs. Dec 21, 2012 IMHO, upgrading older Intel Mac hardware (Core Solo/Duo- and Core 2 Duo-based Macs) to Snow Leopard shouldn't even be a question.

  1. Upgrade Mac Os X 10.5 8 To Snow Leopard Free Download
  2. Upgrade Mac Os X 10.5 8 To Snow Leopard Free Download

I have an iMac(Early 2009) running Leopard (10.5.8). Now I want to upgrade my OS to El Capitan (10.11).

Snow

The situation is this one:

Upgrade mac os x 10.5 8 to snow leopard free download

Upgrade Mac Os X 10.5 8 To Snow Leopard Free Download

my iMac version is listed under the upgradable devices

MacOSX 10.6.8 is required to be installed (due to Mac App Store introduction) on the iMac

Official solution (or what I undestood reading Apple website)

  • buy the DVD of Snow Leopard (10.6) from online Apple Store and install it on 10.5.8;
  • update the OS until 10.6.8;
  • use the App Store to download and install El Capitan.

Said that, after some search, I found this macworld article showing alternative methods to upgrade from 10.5.8 MacOSX version to a more recent one. This reading brought me to another solution:

Upgrade Mac Os X 10.5 8 To Snow Leopard Free

Upgrade Mac Os X 10.5 8 To Snow Leopard Free Download

Alternative solution

10.5
  • use a Mac of a friend of mine which runs El Capitan to download El Capitan from Mac App Store;
  • create a bootable usb stick from it;
  • use it to do a clean install on my iMac (erasing all disk content before choosing the HDD in which to install El Capitan)
  • configure my iMac creating my Apple ID

Questions

Snow
  1. Will solution 2 work?
  2. Is solution 2 legal?

Note

The linked article hit my questions' topics but I did not deeply understand nor the configuration of the Apple ID on the fresh installed El Capitan nor the legal aspects of the solution.