MAKE THIS ARTICLE WORK AGAIN. I have a Mac OSX that I got a few years ago, and i need to update it to OSX 10.5. NONE of the links work and i need them to work. Please fix this.

You would need to purchase a Leopard installer DVD on eBay, Amazon, or Google. You cannot download it.

If you have an Intel Mac you can skip Leopard and upgrade to Snow Leopard instead:

Upgrading to Snow Leopard

You must purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.

After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.

Snow Leopard General Requirements

1. Mac computer with an Intel processor

2. 1GB of memory

3. 5GB of available disk space

4. DVD drive for installation

5. Some features require a compatible Internet service provider;

fees may apply.

6. Some features require Apple’s MobileMe service; fees and

terms apply.

Which links do not work?

The instructions are archived and will not be updated, but as far as I was able to determine they remain correct.